Ganymede, Jupiter's largest moon and the solar system's largest, is bigger than Mercury and the dwarf planet Pluto, with a diameter of 5,268 kilometers.

Planetary alignments have always been a fascinating subject, both for scientists and astrology enthusiasts alike. The idea ...

The decision comes as the Voyager spacecraft face diminishing power supplies due to the gradual decay of their radioactive ...

California solar homeowner believes the main importance of rooftop solar is that electricity is produced where it is consumed ...

It's not every day that a prominent feature of our solar system disappears, but that's precisely what will happen with Saturn ...

What can Venus-like exoplanets, also known as exoVenuses, teach us about our own solar system and potentially finding life ...

Emporia State and the Peterson Planetarium will collaborate with Emporia Main Street on creating a permanent scale model of the solar system throughout campus and the downtown area, a project ...

To save ourselves from a killer asteroid, first we have to find it. A spacecraft now under construction at NASA’s Jet Propulsion Laboratory in may be our best hope. The Near-Earth Object Surveyor is a ...

"This mission's trailblazing research is rewriting the textbooks on solar science by going to a place no human-made object ...

A new 28-minute film explores the medical, social, political and ethical challenges of parenthood and child-rearing that ...