Explore space with these fun solar system worksheets. Kids will learn about planets, moon phases, and space exploration through hands-on activities. Perfect for home or classroom use, these ...

An "interstellar object" is speeding toward the inner solar system, where Earth is located, astronomers have confirmed.

The solar wind pushes some of the gas and dust away from the comet, forming those beautiful tails we see. A comet actually ...

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.

U.S. astronomers hunting for "Planet Nine" have instead stumbled on what appears to be a new dwarf planet in the solar system's outer reaches.

In 2017, NASA discovered and later confirmed the first interstellar object to enter our Solar System. It wasn’t aliens. But artist impressions of the object (called ‘Oumuamua, the Hawaiian ...

When I was a kid, there were nine planets. Now we know of thousands! But that includes exoplanets, alien worlds that orbit alien suns.Only eight planets call our solar system home. Or there might ...

Jupiter, the largest planet in the solar system, was 2 to 2.5 times bigger in its earlier life, according to new research. Credit: NASA / JPL-Caltech / SwRI / MSSS / Tanya Oleksuik Jupiter, the ...