Our solar system may have a ninth planet after all, following the declassification of Pluto nearly two decades ago, ...

The solar system is our cosmic neighborhood, made up of the sun and everything that orbits it — planets, moons, asteroids, comets, and even dust and gas. The order of the planets in the solar ...

Now, a new study has whittled a list of 13 candidates down to just one potential object slowly moving around our sun ...

Earth has four seasons, but do other planets in our solar system also have hot summer days and cold winter nights?

Astronomers claim to have discovered a new ninth planet in our Solar System. Planet Nine, also known as Planet X, is a hypothetical celestial object that would distantly orbit our Sun – but ...

The robotic Cassini spacecraft which is now orbiting Saturn looked back toward the eclipsed Sun and saw a view ... into the deepest reaches of our solar system. These probes, unlike the Hubble ...

The dark nebula is part of the Circinus West molecular cloud, which stretches for 180 light-years, containing a mass 250,000 ...

The NASA New Horizons spacecraft's extensive observations of Lyman-alpha emissions have resulted in the first-ever map from the galaxy at this important ultraviolet wavelength, providing a new look at ...