NASA/ESA Hubble Space Telescope, Gemini North telescope and NASA Infrared Telescope Facility observations of Neptune and ...

Information about Uranus is limited. What we know is that the planet is composed mainly of water and ammonia ice, its ...

Based on 20 years of observations by NASA’s Hubble Space Telescope, new research sheds light on one of the solar system’s ...

This week, a beautiful lineup of Saturn, Venus and the moon will rise before the sun, and adorn the night sky. All three ...

Scientific American spoke with the astronomer who has contributed to the discovery of two thirds of Saturn’s known moons ...

Today, it’s believed that Jupiter and Saturn, the largest planets, were the first to fully form, both within a few million ...

Read Two views of the planet Uranus appear side-by-side for comparison. At the top, left corner of the left image is a ...

Jupiter joins Mercury in early twilight as Mars lingers with Leo after dark. Saturn is visible in the morning, meeting ...

Astronomers find evidence of a possible ninth planet beyond Neptune, reigniting the debate about the formation of the Solar ...

Planets with unusually wide orbits may be normal by-products of the formation of planetary systems. This is suggested by new simulations.

This careful process led them to a single promising candidate: a faint dot that appeared in one position in IRAS's 1983 images but ... Saturn, Uranus and Neptune formed, and was later ...