ESA's Mars500 crew members Diego Urbina and Romain Charles recorded 15 video diaries from all phases of their simulated mission to Mars, plus hundreds of photos and other video clips. Most of these are available on ESA's Mars500 website (www.esa.int/Mars500), but here is a compilation of their YouTu...

Launched nearly 28 years ago, the Hubble Space Telescope has changed our understanding of the cosmos, allowing us to calculate the age of the universe and the rate at which it is expanding. Hubble has allow us to peer back to almost the origins of the universe, to locations more than 13.4 billion li...

Our SpaceX Crew-6 mission safely returns to Earth, the tech demo hitching a ride on our Psyche spacecraft, and studying ancient life on Earth to better understand Mars … a few of the stories to tell you about – This Week at NASA!

Scientists at MIT, Cardiff University, and elsewhere have observed what may be signs of life in the clouds of Earth's planetary neighbor, Venus

In this video we go to South America! In the Atacama Desert, Chile, we find the most advanced technology for space observation. Here, the Royal Astronomical Community members watched for six months as a black hole simply absorbed a massive star. By the way, these are the same scientists who proved t...

On Monday, scientists announced the first-ever observation of a cosmic event using both gravitational wave detectors and conventional telescopes. They witnessed a kilonova, a violent, brilliant explosion that occurs when two neutron stars collide. The discovery was a massive undertaking. Thousands o...

A view of the Auroras (the Northern/Southern Lights) as seen from the International Space Station during September 2011.

The Grand Finale - NASA's Cassini spacecraft will dive through the unexplored space between Saturn and its rings. What we learn from these ultra-close passes over the planet could be some of the most exciting revelations ever returned by the long-lived spacecraft. This animated video tells the story...

An Atlas V rocket lofted the Juno spacecraft toward Jupiter from Space Launch Complex-41. The 4-ton Juno spacecraft will take five years to reach Jupiter on a mission to study its structure and decipher its history.
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A mysterious and intense X-ray source near the black hole shines onto the surface layers of the accretion disk, causing iron atoms to radiate characteristic emission -- what astronomers call the iron K line -- at about 6,000 to 7,000 electron volts. The inner part of the disk is orbiting the black h...