Chem. Eng. Amateur Astronomer, member of ACDA. Compilation of news and comments about Astronomy, Astronautics, Science and Technolgy.
882 days ago
The eXtreme Deep Field, or XDF. The photo was assembled by combining ten years of NASA/ESA Hubble Space Telescope.http://www.spacetelescope.org/news/heic1214/
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