StarDate Online logoContact StarDate | About StarDate | Friends of McDonald | Sign up for SkyTips
Black Holes Encyclopedia
Printable version
FAQ

What is the biggest black hole?

The largest confirmed black hole inhabits the core of M87, a giant elliptical galaxy in the constellation Virgo. The M87 black hole appears to be about 6.6 billion times the mass of the Sun, with a diameter of about 25 billion miles (40 billion km) -- more than four times the diameter of the orbit of Neptune, the most-distant planet in our solar system.

Other FAQs

What is a black hole?

Do black holes really exist?

Are any black holes close to Earth?

Will our Sun become a black hole?

What happens when you get close to a black hole?

How does a black hole form?

Are black holes 'doorways' to other parts of the universe?

Can anything ever escape from a black hole?

How many black holes are there?

How can a black hole's own gravity, but not light, escape from it?

Where did the name 'black hole' come from?

How are black holes named?

Will our universe become a black hole?

Survey

Did you find what you were looking for on this site? Take our site survey and let us know what you think.