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

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 ...

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

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

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

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

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

Despite this, the slightly eccentric and tilted orbits of the Solar System’s gas giants remain an enduring mystery. New ...

Saturn's rings might not be younger than the dinosaurs as recently suggested, but nearly as old as the giant planet itself at ...

The research team's simulations indicate a 1 in 100 chance that an interstellar visitor could produce the orbits we see today ...

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