How Far to That Galaxy?

One of the most basic questions in astronomy is how far away something is. Now, a new catalog of objects will help scientists answer that question for tens of thousands of objects that are so far away they date back to the beginning of the universe.

… The more objects the catalog has in it, the easier it is to figure out how big the universe actually is and how fast it is expanding, NASA officials said in a statement. …

GO
http://www.space.com/35246-nasa-galaxy-universe-distance-catalog.html

 

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