Interstellar comet 3I/Atlas is set to reach its nearest point to the sun and Earth on Dec. 19. Here's what to know.

A NASA spacecraft is making a close approach to the sun, repeating its record-breaking distance of 3.8 million miles from the ...

NASA ’s James Webb Space Telescope has found the strongest evidence yet that a small, rocky planet outside our solar system ...

I nterstellar comet 3I/ATLAS will make its closest approach to Earth this month, whizzing by at 270 million kilometers (168 ...

He highlighted several other features he considers unlikely for a natural object, including the comet's trajectory . Loeb ...

Mercury, often considered the “elusive planet,” is notoriously difficult to observe due to its proximity to the Sun. However, ...

(CNN) — After decades of searching, astronomers have uncovered some of the strongest evidence yet of exoplanets orbiting Barnard’s Star, the nearest single star system to Earth. The four planets are ...

Barnard's Star is a small, dim star of the type that astronomers call red dwarfs. Consequently, even though it is one of the ...

Aging stars may be destroying the giant planets orbiting closest to them, according to a new study by astronomers at UCL and the University of Warwick. Subscribe to our newsletter for the latest ...

A rare celestial event on Feb. 28 will offer skywatchers the chance to witness a "planet parade" of all seven planets in our solar system outside of Earth. It's the last time this type of planetary ...