NASA's twin Voyager 1 and Voyager 2 spacecraft, both running on nuclear power, now have access to just a portion of the 470 ...

Some 350 years after a supernova, its shockwave reaches interstellar space and causes clouds of gas and dust to glow. Credit: NASA / ESA / CSA / STScI / Jacob Jencson (Caltech/IPAC) Scientists have ...

3I/ATLAS is now exiting our solar system at more than 137,000 miles per hour.

The farthest spacecraft from Earth has shut down another instrument in the hopes of buying time for an upgrade that could boost the aging probe’s impressive lifespan.

Astronomers found 'heavy water' in interstellar comet 3I/ATLAS, suggesting it formed in a cold, unusual environment beyond ...

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An international team of scientists, led by the University of Oxford, has achieved a world-first by creating plasma "fireballs" using the Super Proton Synchrotron accelerator at CERN, Geneva, to study ...

A cosmic traveler from beyond our solar system is making its closest approach to Earth this week, offering astronomers and stargazers a fleeting opportunity to witness a visitor from another star ...