Looking for an engaging way to teach toddlers and preschoolers about the wonders of space? This Dollar Tree Outer Space Sensory Bin is the perfect combination of fun, learning, and sensory exploration ...

Evidence that rocky planets beyond Jupiter formed as rapidly, and at the same time, as the inner planets could transform our understanding of how planets take shape — not only in our solar system, but ...

CAPE CANAVERAL, Fla. (AP) — Astronomers have discovered the earliest seeds of rocky planets forming in the gas around a baby ...

All seven of the other planets in our solar system are about to become visible at once in a great planetary alignment – here’s how to spot the celestial show. Close. Advertisement.

Our solar system may have a ninth planet after all, following the declassification of Pluto nearly two decades ago, researchers say. ABC News. Live. Video. Shows. Shop. Log In. Stream on.

For a few evenings around 28 February, every planet in the solar system will be visible in the night sky, thanks to a rare great planetary alignment. Here's how to make sure you don't miss this ...

This process, called accretion, is how everything in the solar system – planets, moons, comets and asteroids – came into being. Telescopes can see young solar systems being born.

Viewed from above the solar system, the seven planets will fall within Earth’s line of sight at sunset, and will not be obscured by the sun. Mercury. Sun. Mars. Venus. Earth. SKY AT. SUNSET.