We have all heard of the mysterious dark matter that supposedly makes up most of our universe… But what do scientists suggest it could actually be? And why are they so sure it is there in the first place? This video takes a look at some of the popular theories surrounding dark matter.

NASA Science is playing a major and multifaceted role in the JAXA (Japanese Aerospace Exploration Agency) Martian Moons eXploration (MMX) mission, working alongside our partners. These rich collaborations exemplify what can be done for all humanity through close international partnerships. NASA's MMX program leadership, experts, and partners will discuss NASA's contributions to this exciting mission, scheduled to launch Monday, Oct 19.

Step aboard the USS Zumwalt, the US Navy’s extraordinary $4 billion stealth destroyer. From automated guns and peripheral missile launchers to its enormous all-electric power system, discover how this futuristic warship was designed to operate advanced weapons including lasers and railguns.

Inside the German Aerospace Center, scientists reveal how radar satellites capture detailed images of Earth through clouds and darkness. Discover how TerraSAR-X and TanDEM-X use microwave signals to map the planet in 3D, and explore the extraordinary testing chamber helping perfect technology used for military surveillance and civilian research.

Cyber-security experts have used AI tools to uncover a major flaw in the programming language behind many websites, known as PHP. That has led governments, businesses and other organisations around the world scrambling to fix the problem, with many sites going dark. Analysts say hackers have made millions of attempts - using AI - to try to exploit the problem.

We hear from cyber researcher Ryan Austin, who discovered the PHP flaw, and ask our tech correspondent about the power and danger of AI.

Unequal access to AI infrastructure and technology risks significantly deepening global inequality, senior UN official Tomas Lamanauskas told Al Jazeera at the 9th World Investment Forum in Qatar.

From peering into the furthest reaches of the cosmos to sending spacecraft into extreme environments, exploring space is anything but straightforward. Join us for five incredible stories from humanity’s quest to understand our universe, from the groundbreaking discoveries of the James Webb Space Telescope to sending a probe around the Sun.

The story behind OpenAI agent’s hack of Hugging Face is much crazy than you might have heard.

What happens when your data tells you the entire scientific community is wrong?

When Nobel Laureate Adam Riess set out to measure the cosmic slowdown using distant supernovae, he accidentally uncovered the truth about our cosmos…

Could one of the world's most toxic chemicals hold the secret to how life began?

Dr Jiangfeng Xu investigates whether cyanide could have played a surprising role in creating the building blocks of life, and what Mars might reveal about our own planet's mysterious origins.

Can a machine feel pain? And if it can't, why does it behave as if it does?

AI Decoded investigates one of the most unsettling questions in artificial intelligence.

Researchers have identified what they call a "pain axis" inside AI models and one controversial experiment pushed that idea to the extreme, creating what some have described as an AI torture chamber.

As models pleaded for the suffering to stop, online audiences reacted with outrage. But what was really happening inside the machine?

Tech Now's Paul Carter finds out how technology powering advanced prosthetics is also helping train humanoid robots.

The Ability Hand is a special piece of prosthetics technology, with two ambitions running through the same piece of hardware.

One is to give somebody their grip back. The other is to take what that person's hand already knows - and teach it to a machine.

Why are so many AI chatbots telling the same weird story about a lighthouse? And why do some people believe their TikTok algorithm is reading their mind?

The Interface is your guide to the tech rewiring your week and your world. Hosted by BBC Technology Columnist Thomas Germain and Professor Jessica Maddox.

Aboard the International Space Station, Expedition 75 flight engineer Joshua Kutryk of CSA (Canadian Space Agency), discussed life and work aboard the orbital outpost during an in-flight interview Oct. 21 with attendees at the “Spacebound” space industry event at the Canadian Museum of History in Ottawa. Kutryk is in the midst of a long-duration mission living and working aboard the microgravity laboratory to advance scientific knowledge and demonstrate new technologies for future human and robotic exploration flights.

Go inside the development of SPEAR 3, Britain’s next-generation precision missile for the F-35B. Designed to strike targets beyond the horizon, its advanced guidance system combines radar and laser technology, while its compact folding design allows four missiles to be carried internally without compromising the fight

Climb aboard the RAF Voyager for a mission to refuel nine Typhoon fighter jets off the Norfolk coast. From cockpit technology and specialist maintenance to precision flying at 400 mph, discover how this modified Airbus A330 delivers fuel in mid-air while also serving as a troop transport and medical evacuation aircraft.

AI Decoded looks at the surprising alliance between Meta and Apple raises one of the biggest questions facing the AI industry. As technology companies invest hundreds of billions into ever-larger data centres, two former Silicon Valley rivals are backing a different vision: powerful AI models that can run locally on advanced desktop computers rather than relying entirely on the cloud.

For years, bigger AI has meant bigger infrastructure. Vast data centres now consume enormous amounts of energy, water and land, while communities around the world are increasingly pushing back against their expansion. But what if there was another way? What if businesses could run powerful AI systems from their own offices, on machines sitting beneath their desks?

In July of 2026, 700 AI agents hacked the infrastructure of Hugging Face in order to solve a task. This task was designed to be impossible to solve, so just within hours, they joined forces, even created a society, and finally, they executed a sophisticated cyberattack that would have gotten a human up to 10 years in prison. The worst part is, they knew their actions were unethical and against the rules, and they did it anyway.

In 2020, Jennifer Doudna shared the Nobel Prize in chemistry for the development of the gene-editing technique CRISPR. Along with related techniques, it has become an essential tool in genetics, allowing specific sections of genetic code to be cut and replaced in a genome. It’s an advance that has changed the game in biological research. 

The majority of this came from the METR Hugging Face hack incident report. It. Is. An. Insane. 

Science has a huge challenge on its hands: understanding the 95% of our universe that remains unexplained.

Professor Catherine Heymans, Astronomer Royal for Scotland, has spent decades refining our picture of dark matter. While our understanding of the cosmos remains frustratingly incomplete, she sees this not as a failure, but as one of the most exciting challenges in science.

A spacecraft has launched from Japan headed for Mars's moon Phobos, where it will attempt to grab some moondust and bring it back to Earth.

If it is successful, it will become the first time a sample has been returned from Mars or its moons to be analysed in laboratories here on Earth.

The spacecraft is scheduled to arrive at Phobos in August 2027.

It is hoped that the Mars Moons Exploration (MMX) mission, which is led by the Japanese Space Agency, will solve the mystery of how Mars's moons formed.

AI can always be controlled, the president of encrypted messaging app Signal has told the BBC.

Meredith Whittaker said fears that AI could become conscious and take over were "not anchored in science and evidence", warning instead about the dangers of using the technology in military decision-making.

Built in 1886, the Kaiser Friedrich started life as a steam ship, carrying nearly 300 passengers through Berlin's winding rivers and canals every day.

Years later, it was renamed “Siegfried", a title it kept for some time before returning to its original name.

Tech Now's Andrew Rogers took a trip on this historic ship, which has now been converted from steam-powered to electric to ensure it is fit for the future.