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Top 10 space stories of 2012

Astronomers found tiny galaxies ferociously forming stars, the most advanced planetary rover safely touched down on Mars, physicists discovered a particle they’ve been seeking for 40 years, and more.
Get details on all of these 2012 stories in the January 2013 issue of Astronomy magazine.
NASA/ESA/A. van der Wel (Max Planck Institute for Astronomy)/H. Ferguson and A. Koekemoer (Space Telescope Science Institute)/The CANDELS team

10. Dwarf galaxies and stellar formation

Dwarf galaxies that lived about 9 to 10 billion years ago had bursts of star formation, which implies that many, if not most, of the stars in such galaxies in the present-day universe form in the same way. This image shows 18 of the 69 galaxies studied.
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