It's prom season -- for the planets. Every couple of years, give or take, planets get together in the night sky in such a way that they seem to be aligned with each other. They seem to be, really -- ...

A breathtaking new video compresses more than a decade of deep-space observation into a few seconds, revealing the hypnotic motion of distant worlds. The animation, created by astrophysicist Jason ...

On Monday, June 8, there will be a conjunction of Jupiter and Venus. A conjunction is a celestial event in which two planets or a planet and the moon or ...

If you’d like to see all the planets of our solar system, this is a good week to do so. Step outside at dusk and you’ll notice the most obvious of planets in the southwestern sky. Nowhere near as ...

This month, six planets in the solar system — Mars, Jupiter, Uranus, Venus, Neptune and Saturn — will appear in Earth's skies in a "parade of planets." Although the dark hours of Jan. 25 will be a ...