An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit ...

Need a new idea to keep kids entertained? Try stargazing. Free learning activities and videos about the solar system Free learning activities and videos about the solar system Free learning ...

A six-planet alignment or parade will form an arc in the early night sky, peaking in it's visibility Jan. 17-18. We let you ...

When you first learned about the Solar System, you probably saw diagrams that made it look orderly, with planets arranged in ...

Simpson and Chen ran mathematical models looking at how differently sized Earth-like worlds would have affected the rest of ...

The enormous visitor to our solar system may have been about 8 times the mass of Jupiter, and come nearly as close to the sun ...

Discover Snapchat Planets Order, a creative feature in Snapchat Plus to rank your closest friends like planets in a solar ...

Students were taught about different seasons, phases of the moon, and other out of this world lessons by Dunlap, who travels ...

Volunteer Katie Fountaine demonstrates an interactive tabletop where visitors can build their own virtual solar system Dec. 11 during the grand opening of the NASA exhibit Discover Exoplanets ...