In the frozen outskirts of the solar system, a reddish dwarf planet orbits in silence. Known as Sedna, it is so distant that one trip around the Sun takes more than 11,000 years. For much of that time ...

Stars passing close to the sun could cause planets to collide, including with Earth, or even be ejected as rogue planets, new ...

In the outer reaches of our solar system, far beyond the orbit of Pluto, lies Sedna, one of the most mysterious objects ever ...

Close stellar encounters could change the structure of our planetary system, potentially dooming Earth or other worlds to ...

For the first time ever, the James Webb Space Telescope (JWST) has captured an unprecedented image of an exoplanet outside ...

Detecting exoplanets is one thing, but imaging them is another thing entirely. Astronomers can detect them by the way they ...

Read What are asteroids?Asteroids are rocky objects that orbit the Sun just like planets do. In fact, sometimes asteroids are ...

Only one of the known Venus co-orbital asteroids follows a nearly circular orbit; the others move on more elongated paths ...