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SpaceX's giant rocket, the third Starship test flight, has been "lost".

SpaceX's huge Starship rocket, which will eventually be used for journeys to the Moon and Mars, was "lost" during re-entry into the atmosphere on its way back down to Earth, the company said on Thursday. However, it flew much longer on this third test flight, as the previous ones ended in explosions.

"The craft has been lost," announced a commentator on the live video feed from billionaire Elon Musk's company. "So no water landing today", he added. According to the flight plan, the spacecraft was to end its journey in the Indian Ocean.

The head of SpaceX acknowledged that his rocket would have to carry out hundreds of unmanned missions before eventually carrying its first humans.

Take-off for this third test flight took place shortly after 8 a.m. local time (2 p.m. in Switzerland) from SpaceX's "Starbase" spaceport in Boca Chica, in the far south of Texas, and lasted almost half an hour. The flight nevertheless enabled the spacecraft to reach low-Earth orbit for the first time.

Putting mankind on Mars

At 120 metres high, Starship is the world's largest rocket. It is also the most powerful. SpaceX is counting on it to achieve its stated goal: to make humankind a multi-planetary species by putting it on Mars.

Its development is also very important for NASA, which is counting on this spacecraft to land its astronauts on the Moon during its mission. Artemis IIIscheduled for 2026.

The rocket has two stages: the Super Heavy propulsion stage and, above it, the Starship, which by extension gives its name to the entire rocket.

Two unsuccessful tests

The last test took place four months ago. The two stages of the rocket separated successfully in flight for the first time, but then both exploded. The flights lasted just four minutes in the first test and eight minutes in the second.

However, the spacecraft had reached an altitude of around 150 kilometres, crossing the boundary of space.

SpaceX then proposed 17 "corrective measures" to the US aviation regulator, the FAA, which had to be put in place in order to obtain a new flight licence, which was finally obtained on Wednesday.

"Ambitious objectives

For this third test, SpaceX had said it wanted to achieve several "ambitious objectives". One of these was to carry out a "controlled re-entry" of the spacecraft, which should have fallen back into the Indian Ocean to end the test after about an hour.

SpaceX also wanted to test the opening of the hatch, which could be used in the future to release cargo, such as satellites, into space.

The company also wanted to "demonstrate a fuel transfer" in flight. According to the specialist press, this transfer should have taken place between two tanks inside the spacecraft. Developing this function is essential, because to reach the Moon, Starship will have to refuel once in space, using a vessel that has already been filled by others, and acting as a kind of space service station.

In addition to its inordinate size, Starship's real innovation is that it should eventually be fully reusable. Currently, only the first stage of the Falcon 9 rocket returns to land after each launch to be reused.

Text by RTS afp/juma

Best film, best director, best actor: "Oppenheimer" triumphs at the Oscars

The predicted landslide did indeed occur: "Oppenheimer" won the Oscar for Best Picture on Sunday, along with six other statuettes, on a night that also saw Yorgos Lanthimos' "Poor Creatures" rewarded handsomely. As for the French film "Anatomie d'une chute", it walked away with the Oscar for Best Original Screenplay.

Buoyed by rave reviews and an impeccable cast, Christopher Nolan's portrait of the father of the atomic bomb dominated the evening. "I can't emphasise enough the incredible team we've assembled for this film", said the director, taking advantage of his award for Best Director to thank all the actors.

Cillian Murphy, masterful as Robert Oppenheimer, a nuclear genius full of contradictions and doubts, won the Oscar for Best Actor. "For better or for worse, we live in the world of Oppenheimer" and the atomic bomb, observed the Irishman. "So I'd really like to dedicate this award to peacemakers around the world.

Robert Downey Jr, his on-screen antagonist, who plays a conservative bureaucrat orchestrating the public humiliation of the scientist, won the Best Supporting Actor award.

The film's accolade was complemented by other technical statuettes - editing, cinematography, soundtrack - in keeping with its reputation as a popular masterpiece since its theatrical release this summer.

Buoyed by rave reviews and an impeccable cast, Christopher Nolan's portrait of the father of the atomic bomb dominated the evening. "I can't emphasise enough the incredible team we've assembled for this film", said the director, taking advantage of his award for Best Director to thank all the actors.

Cillian Murphy, masterful as Robert Oppenheimer, a nuclear genius full of contradictions and doubts, won the Oscar for Best Actor. "For better or for worse, we live in the world of Oppenheimer" and the atomic bomb, observed the Irishman. "So I'd really like to dedicate this award to peacemakers around the world.

Robert Downey Jr, his on-screen antagonist, who plays a conservative bureaucrat orchestrating the public humiliation of the scientist, won the Best Supporting Actor award.

The film's accolade was complemented by other technical statuettes - editing, cinematography, soundtrack - in keeping with its reputation as a popular masterpiece since its theatrical release this summer.

>> Read more: "Oppenheimer", the Christopher Nolan version of the story of the father of the atomic bomb

>> Listen to Tout un monde's article on "Oppenheimer" as seen from Japan:

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Emma Stone, a triumphant "poor creature

Actress Emma Stone was the other big winner of the evening. After "La La Land" in 2017, she picked up her second Best Actress Oscar for "Poor Creatures". This baroque tale by Yorgos Lanthimos won a total of four statuettes, praised in particular for its retro-futuristic aesthetic.

Emma Stone plays Bella Baxter, a suicidal woman brought back to life by a mad scientist who implants the brain of the baby she was carrying inside her. She delivers a joyously regressive performance as a creature who discovers sex and a thousand other pleasures in life without shame or prejudice.

This role was "the gift of a lifetime", the actress reacted, thanking her director and expressing her admiration for all her competitors. This category was the tightest: Lily Gladstone, remarkable as a Native American woman poisoned by her husband in Martin Scorsese's "Killers of the Flower Moon", went home empty-handed.

"Anatomie d'une chute" settles for a second-place finish

The French film Anatomie d'une chute was unable to prevent this predicted triumph. A legal thriller about the downfall of a dysfunctional artistic couple, in which an ambiguous writer played by Sandra Hüller finds herself accused of murdering her husband, it had to make do with just one Oscar out of the five categories in which it was nominated, for Best Original Screenplay.

"It will help me get through my mid-life crisis," joked an emotional French filmmaker Justine Triet, who worked alongside Nolan and Martin Scorsese on the film. "It's been a crazy year," she huffed, alongside her partner Arthur Harari, with whom she co-wrote the script. Winner of the Palme d'Or at Cannes, Anatomy of a Fall won two Golden Globes and a Bafta - the equivalent of the British Césars.

His work is the best example of French cinema abroad since "Amour", which won the Oscar for Best Foreign Film in 2013, and "The Artist", which won five statuettes in 2012.

Hayao Miyazaki, 21 years after "Chihiro".

The British film "The Zone of Interest" won the Oscar for Best International Film for its chronicle of the carefree life of a Nazi family just outside Auschwitz. Director Jonathan Glazer took the opportunity to send a message of peace to the Middle East, which is currently being undermined by Israel's war in Gaza.

"Our film shows how dehumanisation leads to the worst", said the Jewish film-maker, adding that the Israelis who died on 7 October in the Hamas attack and the 31,000 Palestinians who died are "all victims of this dehumanisation" (see also the box).

Among the other major awards, Da'Vine Joy Randolph ("Winter Break") was voted Best Supporting Actress. "The Boy and the Heron", by Japanese master Hayao Miyazaki, won the Oscar for Best Animated Film, his second, 21 years after "Chihiro's Journey".

Among the other major awards, Da'Vine Joy Randolph ("Winter Break") was voted Best Supporting Actress. "The Boy and the Heron", by Japanese master Hayao Miyazaki, won the Oscar for Best Animated Film, his second, 21 years after "Chihiro's Journey".

Text by RTS .ch afp/vic

"Deadpool 3" becomes the most viewed trailer in 24 hours

The third instalment, starring Ryan Reynolds, will be in cinemas from 26 July.

Released on Sunday during the Super Bowl final, the trailer for "Deadpool 3" has become the most viewed trailer in the world in the space of 24 hours, with 365 million views, according to Disney.

This third instalment dethroned "Spider-Man: No Way Home", which generated 355.5 million views in one day in 2021. It is worth noting that this year's Super Bowl attracted a record audience of 123.7 million viewers. 

In this film, which has been awaited for six years, the hero played by Ryan Reynolds teams up this time with Wolverine (Hugh Jackman). The latter, who has not appeared in the cinema since the release of "Logan" seven years ago, is briefly shown in the sequence. The film will be in cinemas from 26 July.

Text by Le Matin .ch F.D.A

Super Bowl: Taylor Swift in 5 memorable moments

Super Bowl night has also become Taylor Swift night, because her presence at Allegiant Stadium on Sunday attracted so much attention! Here are five moments that got the web talking.

A REMARKABLE ARRIVAL

Alongside her friend Blake Lively and Ice Spice, Taylor Swift finally made it to the Super Bowl on time. After a few concerts in Tokyo as part of her Eras TourTaylor Swift had to rush out to cheer on her boyfriend Travis Kelce from the Chiefs. Taylor Swift was welcomed like a queen, and was even saluted by NFL Commissioner Roger Goodell.

A LITTLE DANCE WITH BLAKE LIVELY

During Post Malone's performance, Taylor Swift was caught on camera dancing tightly with actress Blake Lively, who starred in Green Lantern and The Age of Adaline. Blake Lively, wife of actor Ryan Reynolds, is one of Taylor Swift's closest friends. In fact, she attended Taylor Swift's birthday party last December.

AND A BEER!

What would the Super Bowl be without improb amounts of alcohol? In the midst of her tasting, Taylor Swift appeared on the stadium's giant screen with her very good friend Ashley Avignone, stylist and designer. Fans screamed - or booed, in the case of the opposing team - as she placed her glass firmly on the counter. Madness, you say?

EXPLOSION OF JOY FOR THE CHIEFS' VICTORY

Taylor Swift literally jumped for joy at the victory of her boyfriend's team, the Chiefs. Surrounded by Lana Del Rey, Blake Lively, Ice Spice and many others, she had to hold on tight to keep from falling because the atmosphere was so festive!

WHEN TRAVIS KELCE SEES TAYLOR SWIFT

As soon as the game was over, Taylor Swift took to the pitch with her boyfriend's mother, Donna Kelce, in a state of total excitement. 

After winning the Super Bowl with the Chiefs, Travis Kelce seemed over the moon. When he spotted his lover, he rushed to give her a hug in front of tons of cameras. The much-hyped couple don't seem to mind the attention they get, if the many hugs and kisses exchanged in public after the win are anything to go by.

Text by Journal de Montreal MÉLISSA PELLETIER

The Apple Vision Pro has just been released, and the virtual and augmented reality headset is already giving Americans ideas.

Apple Vision Pro, the headset launched to great fanfare by the Apple brand, is already experiencing problems, less than two days after its release in the United States.

TECHNOLOGY - As with everything else, there is a time and a place for using Apple Vision Pro, the Apple virtual and augmented reality headset released in the United States on Friday 2 February. Although it has been available for purchase for less than 48 hours, at a price of 3,500 dollars, its use has already led to some funny, and sometimes dangerous, situations.

As you can see in the video at the top of the articleFor example, one of the new owners of the Apple Vision Pro had the bad idea of using it while driving his Tesla. We see him with just one hand on the steering wheel, preferring to use them to navigate on his augmented reality headset while the car's autopilot does the rest. This video, which has gone viral, is obviously not to be reproduced, at the risk of causing an accident.

Mixed reviews

While Apple CEO Tim Cook talks about a " revolutionary device "Augmented reality glasses and virtual or mixed reality headsets are nothing new.

Meta (Facebook, Instagram), Apple's neighbour in Silicon Valley, has made a major contribution to the emergence of this market with its Quest headsets and Ray-Ban glasses, but also by hammering home the idea that the future of the Internet would lie in a sort of "digital world". "metaversThis is a virtual universe where our physical and digital environments merge.

But despite these initial advances, companies, experts and individuals who believe in this future have been waiting impatiently for Apple's first device. The Apple brand has a reputation for launching only ultra-perfect products, which give the user the feeling of being at the cutting edge of technology. "the to the rest of the industry. Initial reviews have been mixed, especially given the prohibitive price tag.

Lack of applications

Testers said they were fascinated by the image quality and ease of use: all they had to do was stare at an application and tap their fingers to open or close it. But they were annoyed that the battery was bulky, and made fun of the "personasthese strange photorealistic avatars that represent users during videoconferences.

Another major problem is the lack of applications available in the App Store that are compatible with the Apple Vision Pro. Popular platforms such as Netflix and YouTube have chosen not to develop ad hoc applications for the Vision Pro for the time being. Although only 150 applications were initially planned, Apple has now doubled (and even quadrupled) its efforts, announcing on Thursday that it finally has more than 600.

Death of Carl Weathers

Actor Carl Weathers, famous for playing Apollo Creed in "Rocky" alongside Sylvester Stallone, and Colonel Al Dillon in "Predator" with Arnold Schwarzenegger, died on Thursday 2 February at the age of 76.
His family said in a statement that he had died peacefully in his sleep.
Younger fans will know him for his role as Greef Karga in "The Mandalorian".

Groundhog Day

2 February is Groundhog Day, a meteorological tradition in the United States and Canada, celebrated in a special way in Pennsylvania. The film "Groundhog Day" starring Bill Murray helped to popularise this tradition, making it even more part of popular culture.

Texas teacher sacked after reading Anne Frank's "Diary" to pupils

The teacher was dismissed after reading an extract adapted as a graphic novel.

UNITED STATES - At school, you may have read the Journal Anne Frank in class, the diary of a young Jewish girl exiled to the Netherlands during the Nazi regime. But in early September, a teacher in Texas was fired for reading extracts from the novel to his pupils in the fourth grade. According to the school district concerned, this version of Journal contains pornographic material.

The controversial extract is taken from a graphic novel adapted from the original work, which includes passages cut from other editions. And one of these passages concerns, among other things, a description of the clitoris written by Anne Frank. The teenager also mentions her attraction to another girl.

After parents complained about these passages being read " inappropriate "The teacher was dismissed, reports the television channel KFDM. This is not the first time that this adaptation has been contested: last year in Texas, the book was withdrawn from certain libraries.

However, the Anne Frank Fund, which manages the copyright for the various editions of the newspaper, had already defended the content of this graphic novel, explaining that a book written by a 12-year-old girl was perfectly appropriate for her peers.

A worrying wave of censorship

But the controversy doesn't stop there: the graphic novel has also been banned in several districts of Florida. This is just one of many examples in the United States, where school libraries have been facing a growing wave of censorship since 2021. A growing number of restrictive laws have been passed by Republican elected representatives, and unsurprisingly it is books about marginalised communities and dealing with subjects such as discrimination, gender and sexuality that are being banned.

Examples abound, particularly in conservative states: in one district in Florida, a book about two male penguins raising a baby penguin together was banned from nursery and primary schools. In South Carolina, it was Ta-Nehisi Coates' memoir on systemic racism, Black anger, which had been singled out by students who had managed to censor the book at their school.

The controversy is growing, to the point that on Tuesday 19 September, 175 artists and activists, including Ariana Grande, Roxane Gay and Mark Ruffalo, signed an open letter condemning this wave of censorship. " Soon these regressive ideologues will turn their attention to other forms of art and entertainment, persisting in their attacks that scapegoat marginalised communities, particularly racialised people and those from the LGBTQ+ community, "The text also calls for the defence of artistic freedom.

Text by huffingtonpost.fr /Émilie Rappeneau

Trump plaide non coupable de tentative de manipulation d’élection

L’ex-président américain Donald Trump a plaidé non coupable, selon un document judiciaire déposé jeudi. Il est inculpé de tentative d’inverser le résultat de la présidentielle de 2020 dans l’Etat de Géorgie.

Il s’agit du quatrième dossier pénal dans lequel est poursuivi le magnat, qui brigue de nouveau la Maison Blanche et reste le favori pour les primaires républicaines. La date de son procès dans cette affaire n’a pas encore été fixée.

Convoqué le 6 septembre pour sa mise en accusation publique en Géorgie, l’ex-président a indiqué dans le document judiciaire qu’il renonçait à son droit d’apparaître devant le juge et ne devrait donc pas se déplacer de nouveau à Atlanta.

M. Trump et 18 autres personnes, dont son ancien avocat Rudy Giuliani, ont été inculpés mi-août de tentatives illicites d’obtenir l’inversion du résultat de l’élection de 2020 dans cet Etat clé, remporté par l’actuel président démocrate Joe Biden.

La loi sur la délinquance en bande organisée, utilisée par la procureure dans ce dossier, prévoit des peines de cinq à vingt ans de prison.

Dans ce dossier, Donald Trump a dû se rendre la semaine dernière dans une prison d’Atlanta pour être fiché. Il y a été soumis à une prise de photo d’identité judiciaire, une première pour un ancien président américain, avant de rapidement repartir.

Marathon judiciaire

Le septuagénaire est en outre accusé à New York de paiements suspects à une ancienne actrice de films X, et par la justice fédérale de pressions électorales lors de la présidentielle de 2020 ainsi que de gestion négligente de documents confidentiels après son départ de la Maison Blanche.

L’ancien président a plaidé non coupable dans toutes ces affaires. Il attribue systématiquement ses déboires judiciaires à l’administration Biden, qu’il accuse d' »ingérence électorale » pour lui barrer la route à la Maison Blanche. Joe Biden est également candidat pour la prochaine présidentielle.

« Je n’ai rien fait de mal » en remettant en cause les résultats de la présidentielle de 2020, a martelé le tribun.

Le tempétueux républicain s’apprête en tout cas à vivre une année 2024 hors norme, entre campagne électorale et plusieurs procès, en mars et en mai – un calendrier qui pourrait encore évoluer. La présidentielle se tiendra elle en novembre.

Paradoxalement, chaque rebondissement judiciaire lui rapporte des millions de dollars en dons de campagne, versés par des trumpistes convaincus qu’il est victime d’une cabale politique.

Text by Keystone-ATS

Titan submarine: Why the waters around the Titanic are still dangerous

In the autumn of 1911, a huge piece of ice broke off from a glacier to the south-west of Greenland's vast ice cap. Over the following months, it slowly drifted southwards, melting little by little as the sea currents and the wind blew it away.

Then, on the cold, moonless night of 14 April 1912, a 125-metre-long (410-foot) iceberg - all that remained of the 500-metre chunk of ice that had left a Greenland fjord the previous year - collided with the ocean liner RMS Titanic, which was making its maiden voyage from Southampton in the United Kingdom to New York in the United States. In less than three hours, the ship sank, taking more than 1,500 passengers and crew with her. The wreck now lies almost 3.8 km beneath the waves, almost 400 miles (640 km) south-east of the coast of Newfoundland.

Icebergs are always a hazard to shipping: in 2019, 1,515 icebergs drifted far enough south to enter the transatlantic shipping lanes between March and August. But Titanic's final resting place has its own dangers, which means that visits to the world's most famous wreck are a major challenge.

  • What can we expect after the deaths of the Titan submarine crew?
  • "It's a disaster. Everything has been washed away".
  • What are these mysterious stones found in rock 2.8 billion years old?

After the disappearance of a five-person submersible that was carrying paying passengers on an excursion to the wreck of the Titanic, the BBC has turned its attention to this region of the ocean floor.

The depths of the ocean are dark. Sunlight is absorbed very quickly by the water and cannot penetrate more than 1,000 metres from the surface. Beyond that, the ocean is plunged into perpetual darkness. This is why the Titanic is in a region known as the "midnight zone".

Previous expeditions to the wreck site described a descent of more than two hours in total darkness before the ocean floor suddenly appeared under the lights of the submersible.

With line of sight limited beyond the few metres illuminated by the onboard lights of the truck-sized submersible, navigation at this depth is a real challenge, and it's easy to become disorientated on the seabed.

  • 5 myths that persist about the Titanic more than a century after it sank

However, the detailed maps of the Titanic wreck site, produced by decades of high-resolution scanning, can provide landmarks when objects are visible. Sonar also allows the crew to detect features and objects beyond the small area of light illuminated by the submersible.

Submersible pilots also rely on a technique known as inertial navigation, which uses a system of accelerometers and gyroscopes to track their position and orientation relative to a known starting point and speed. OceanGate's Titan submersible is equipped with a state-of-the-art autonomous inertial navigation system, which it combines with an acoustic sensor called a Doppler Velocity Log to estimate the vehicle's depth and speed relative to the seabed.

Despite this, passengers on previous Titanic voyages with OceanGate have described how difficult it is to find your way around once you reach the bottom of the ocean. Mike Reiss, a TV comedy writer who worked on The Simpsons and took part in an OceanGate voyage on the Titanic last year, told the BBC: "When you hit the bottom, you don't know where you are. We had to wriggle blindly along the bottom of the ocean knowing the Titanic was somewhere, but it's so dark that the biggest thing under the ocean was only 500 metres away from us and we spent ninety minutes looking for it."

Crushing depths

The deeper an object sinks into the ocean, the greater the pressure of the water around it. On the seabed, at a depth of 3,800 m, the Titanic and everything around it was subjected to pressures of around 40 MPa, or 390 times higher than at the surface.

"To put that into perspective, it's about 200 times the pressure of a car tyre," Robert Blasiak, an oceanography researcher at Stockholm University's Stockholm Resilience Centre, told BBC Radio 4's Today programme, "That's why you need a submersible with very thick walls." The Titan submersible's carbon fibre and titanium walls are designed to enable it to operate at a maximum depth of 4,000 metres.

  • Why is NASA exploring the depths of the Earth's oceans?

We are probably most familiar with the strong surface currents that can sweep boats and swimmers off their course, but there are also underwater currents deep in the ocean. Although they are generally not as powerful as those found at the surface, they can nonetheless move large quantities of water. They can be driven by surface winds that influence the water column below, by tides in deep waters or by differences in water density due to temperature and salinity, known as thermohaline currents. Rare events known as benthic storms - which are generally linked to eddies at the surface - can also cause powerful, sporadic currents that can carry material along the seabed.

The information we have on the underwater currents around the Titanic, which was divided into two main sections after the bow and stern separated during the sinking, comes from research into the shapes of the seabed and the movement of squid around the wreck.

Part of the wreck of the Titanic is known to lie close to a section of the seabed affected by a southward-flowing current of cold water known as the Western Boundary Undercurrent. The flow of this 'undercurrent' creates migratory dunes, ripples and ribbon-like patterns in the sediments and mud of the seafloor, which have enabled scientists to understand its force. Most of the formations observed on the seabed are associated with relatively weak or moderate currents.

The ripples of sand along the eastern edge of the Titanic's debris field - the scattering of personal effects, fittings, coal and parts of the ship itself that spilled out during the sinking - indicate the existence of an east-west undercurrent, while within the main wreck site, the scientists say, the currents tend from north-west to south-west, possibly due to the larger pieces of the wreck changing their direction.

To the south of the bow, the currents appear to be particularly changeable, flowing from north-east to north-west and south-west.

Many experts expect that the winnowing of these currents will eventually bury the wreck of the Titanic in the sediment.

Deep-sea marine archaeologist Gerhard Seiffert, who recently led an expedition to scan the wreck of the Titanic in high resolution, told the BBC that he did not think the currents in the area were strong enough to pose a risk to a submersible - provided it had electricity.

"I am not aware of any currents posing a threat to an operational deep-sea vehicle at the Titanic site," he said. "In the context of our mapping project, currents represented a challenge to the accuracy of the mapping, not a safety risk."

Sediment flows

After more than a hundred years at the bottom of the sea, the Titanic has gradually deteriorated. The initial impact of the two main sections of the ship colliding with the seabed twisted and deformed large parts of the wreck. Over time, microbes that feed on the ship's iron have formed icicle-shaped "hardnesses" and are accelerating the deterioration of the wreck. In fact, scientists estimate that the higher bacterial activity on the stern of the ship - largely due to the greater damage it has sustained - is causing it to deteriorate forty years faster than the bow.

The wreck is constantly collapsing, mainly due to corrosion," explains Mr Seiffert. Every year, a little bit. But as long as you stay at a safe distance - no direct contact, no penetration through openings - no damage is to be feared."

Although extremely unlikely, sudden flows of sediment at the bottom of the sea have already damaged and even washed away man-made objects on the ocean floor.

The most significant events - such as the one that severed the transatlantic cables off Newfoundland in 1929 - are triggered by seismic phenomena such as earthquakes. There is a growing awareness of the risk posed by these events, although there is no evidence that an event of this type was involved in the disappearance of the Titan submarine.

Over the years, researchers have identified signs that the seabed around the wreck of the Titanic was affected by huge submarine landslides in the distant past. Huge volumes of sediment appear to have slid down the continental slope from Newfoundland to create what scientists call an "instability corridor". They estimate that the last of these 'destructive' events occurred tens of thousands of years ago, creating layers of sediment up to 100 metres thick. But these events are extremely rare, explains David Piper, a marine geology researcher at the Geological Survey of Canada, who spent many years studying the seabed around the Titanic. He compares these events to the eruption of Vesuvius or Mount Fuji in terms of frequency - on the order of once every tens of thousands or hundreds of thousands of years.

Other phenomena known as turbidity currents - where water becomes loaded with sediment and flows along the continental slope - are more frequent and can be triggered by storms. "We show a repetition interval of around five hundred years," explains Piper. But the topography of the seabed in the area should direct the sediment flows towards a feature known as the 'Titanic Valley', which would mean that they would not reach the wreck at all.

According to Seiffert and Piper, it is unlikely that such an event could have played a role in the disappearance of the Titan submersible.

Other geological features around the wreck site have yet to be explored. During a previous expedition to the Titanic with OceanGate, Paul-Henry Nargeolet, a former French Navy diver and submersible pilot, visited a mysterious anomaly that he had detected with sonar in 1996. It turned out to be a rocky reef, covered in marine animals. He was hoping to visit another landmark that he had detected near the wreck of the Titanic on previous expeditions.

As the search continues for the missing ship, there are few clues as to what may have happened to the Titan and her crew. But in such a harsh and inhospitable environment, the risks involved in visiting the wreck of the Titanic are as relevant today as they were in 1986, when the first people to set eyes on the ship since it sank embarked on the journey to the depths.

Text by Richard Gray / BBC Future