The engineering lesson is simple: Sometimes the best observatory is the one already parked at another planet. When an interstellar comet was in a viewing geometry that kept Earth-based telescopes too ...

Footage from NASA/ESA Hubble Space Telescope that celebrates 35 years in space. Images of Mars, planetary nebula NGC 2899, Rosette Nebula and galaxy NGC 5335 to celebrate. Credit: NASA's Goddard Space ...

Two of NASA's giants of cosmic discovery have been named among the best inventions of the past quarter-century – at least, according to Time magazine. The media company recently assembled a list of ...

This is great news for planetary defense. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The path of comet 3I/ATLAS through the solar system has ...

Get any of our free daily email newsletters — news headlines, opinion, e-edition, obituaries and more. The Museum of the Rockies and members of the South West Montana Astronomical Society (SMAS) will ...

Since comet 3I/ATLAS, the third known interstellar object, was discovered on 1 July 2025, astronomers worldwide have worked to predict its trajectory. ESA has now improved the comet's predicted ...

New research has mapped 16 extensive, interlaced river systems on Mars, dating back approximately 3.7 billion years to the Early Hesperian Period. These large river systems, despite covering only ...