Here are some amazing images that are literally out of this world. With views of 100 million stars and 200 million galaxies, Google Sky lets you be a virtual space traveller with just a few clicks of a mouse.
8. One big universe
One big universe
Is the universe infinite? No one knows for sure. All we can say is that it extends as far as our best telescopes can see. This image - reportedly the deepest view ever of space - resembles what things might have looked like everywhere during the cosmos's so-called dark ages, before the first stars formed. (Search: HUDF)