In August 2006, the International Astronomical Union made the controversial, but correct, decision to demote Pluto from its ...

Take advantage of a special 6-7 planet alignment from Earth's perspective. Planets 'line up' in the skies over California in ...

Around the time of your romantic dinner, head outside and look to the southwest to spot the super brilliant planet in the night sky ...

Four planets will be widely visible to the naked eye through part of February, but calling them a 'planetary alignment' may ...

A newly confirmed exoplanet around a nearby sunlike star might be astronomers’ best chance yet to look for life beyond the ...

An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit before shoving four of the solar system's planets onto a different course.

These are bodies of ice and rock that orbit the sun well past Neptune and Pluto, and they’re large, all more than 1,000 kilometers wide. In fact, with a width of more than 2,300 km, Eris rivals ...

As planets pass in front of their parent stars as viewed from Earth, they cause a tiny dip in the amount of starlight we ...

Here’s what you should know when you go outside to see for yourself: Yes, the planets are indeed lined up across our sky. No, ...

Both Pluto and Charon began as independent objects in the Kuiper Belt, a band of icy objects that surrounds our solar system out beyond the orbit of Neptune. View of the proposed kiss-and-capture ...

Astronomers at the NASA Goddard Space Flight Center may have discovered a star hurtling through the Milky Way with a planet ...

That is why it is a “sub-Neptune”, a class of exoplanet that does not occur in our Solar System. To reveal its secrets, researchers used the Mid-Infrared Instrument (MIRI) on the JWST and followed the ...