Astrophysicists have once again enriched our knowledge of the cosmos with a new discovery: two small planets orbiting ...

A new study by Rice University researchers Sho Shibata and Andre Izidoro presents a compelling new model for the formation of ...

They also weigh about the same, with Neptune coming in at 1.024 x 10^26 kg (about 17 times the mass of Earth) and Uranus weighing 8.682 x 10^25 kg (about 14 times the mass of Earth). What's more ...

A weak magnetic field likely attracted matter inward, contributing to the formation of the outer planetary bodies, from ...

A rare grouping of 10 celestial bodies is captured in a stunning new photo taken during last weekend’s great planetary parade ...

Earth's year, of course, is 365 days, while at the upper end, Neptune takes a whopping 60,190 days, or about 165 Earth years, to complete a single revolution of our star. The different speeds of ...

Experts have claimed it could be the first time all planets including Earth have been captured in a single image.

All seven planets will be visible this time around, meaning Venus, Mars, Jupiter, Saturn, Mercury, Neptune and Uranus. (Earth, of course, is the eighth planet, and poor Pluto was demoted in 2006 ...

To see Uranus and Neptune, you'll need a telescope ... The planets in the solar system orbit the sun, just as Earth does. Every planet orbits at a different speed and distance.