An exoplanet in the Trappist star system — a multi-planet star system similar to the solar system and just 39 light-years ...

NASA Hubble Telescope captured this image of the planet Mars in 2018. This high-resolution image was more powerful than the ...

Test your knowledge on our solar system, from the biggest and smallest planets to the behemoth mountain on Mars.

Observations made of Jupiter’s moon Io during the Juno mission’s flybys helped astronomers confirm how and why Io became the ...

Over the last ten years, OPAL has observed Uranus' northern hemisphere, which has faced the inner solar system for the ...

An object up to dozens of times the mass of Jupiter flying through our solar system may have disrupted planetary orbits.

Delving into the behaviors of the Sun and protecting humans at home and beyond are top priorities, according to the National ...

For two decades now, the iconic twin Voyager spacecraft have been quietly overturning everything we thought we knew about the ...

It's possible for our solar system to capture a rogue planet and give it a home as it hurtles through the galaxy, according ...

Massive object passing through solar system is a better explanation for nature of orbits of Jupiter, Saturn and Neptune ...

Thanks to the James Webb Space Telescope, we may have spotted a galactic neighbor with all the right molecular ingredients a ...