The black hole is very big. It has as much matter as four million Suns! It is also very far away. Dr. Ghez used these telescopes to find it.
Photo Credit: Abbie Warnock-Matthews/Shutterstock
In the Know
How We Can Protect Animals
It’s Earth Day on April 22. Let’s look at ways … read more
In the Know
What Is Sweat?
Sweat has an important job. It keeps us from getting … read more
In the Know
Bats Use Sound to “See”
Bats and other animals, such as whales, use echolocation to … read more