Using NASA's Transiting Exoplanet Survey Satellite (TESS), astronomers have discovered that aging stars in their so-called ...

If you do check out Jupiter with a small telescope on Sunday night, you'll see all four Galilean moons, with Ganymede and Io on one side of Jupiter and Europa and Callisto on the other. The ...

When stars like the Sun run out of hydrogen in their cores, fusion slows and the outer layers balloon outward. The star can ...

Britain's answer to Star Trek, the eerie slow-burn sci-fi series Space: 1999, is an underrated and very expensive masterpiece ...

The quiet fear of losing your home is usually a human story, but in the sky, entire worlds may face something similar. As ...

Space exploration has always pushed the boundaries of human achievement, but not everything launched beyond our atmosphere ...

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) To some, this concern may seem premature. About 10 to 20 missions are headed to the ...

The giant New Glenn rocket from billionaire Jeff Bezos' space company Blue Origin launched from Florida on its debut mission ...

Is a sun a star or a planet? While science now agrees the sun is a star, new telescopes may soon challenge how we define ...

Astronomers are tracking interstellar comet 3I/ATLAS after JWST and NASA missions detected an extreme CO₂ outburst that ...

Scientists have discovered a supermassive black hole flare, the largest seen in the universe, and it may be making a meal of ...