A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

How many Galaxy are there?

Best Answers

Counting them seems like an impossible task. Sheer numbers is one problem — once the count gets into the billions, it takes a while to do the addition. read more

For every galaxy we can see, there are another 9, smaller fainter galaxies that we can’t see. Of course, we’re just a few years away from being able to see these dimmer galaxies. When NASA’s James Webb Space Telescope launches in October, 2018, it’s going to be carrying a telescope mirror with 25 square meters of collecting surface, compared to Hubble’s 4.5 square meters. read more

Our own galaxy, the Milky Way, is a large disk-shaped barred-spiral galaxy about 30 kiloparsecs in diameter and a kiloparsec thick. It contains about two hundred billion (2×10 11) stars and has a total mass of about six hundred billion (6×10 11) times the mass of the Sun. read more

Encyclopedia Research

Wikipedia: