Explore space with these fun solar system worksheets. Kids will learn about planets ... these printables make astronomy exciting. From planet matching to moon phase trackers, these free science ...

When astronomers realized that Ceres had many "relatives" in roughly the same region of the solar system, they began calling them asteroids or minor planets. But as you can see in the table at the ...

“[Planetary scientists] have thought our solar system is not standard in its spacings,” says astronomer Juliette Becker of the University of Wisconsin-Madison. In particular, the rocky planets ...

But this is likely just "the tip of the iceberg," Edward Ashton, an astronomer at the Academia Sinica Institute of Astronomy ... if we find more planets in the solar system. One such world is ...