Tag: Bigger

Formation of Titans

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Big stars tend to stick together.  They all require incredibly dense regions in which to form, but once they do, they do a great job of blowing away and ionizing any other gas and dust in the vicinity.  This is why nebulas in distant galaxies are great tracers of massive star formation.  The bigger and hotter the star, the more UV light it produces, the more it ionized a gas cloud, the more we see gorgeous nebula.  So it’s no surprise that when I look at the nebula below, I can guess that the central stars are huge, outweighing our...

Ancient Faint Galaxy Discovered

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If you look up into the sky on a clear night, you would see thousands of stars.  There are surely many more that you would need a telescope to see.  But there are not stars everywhere.  You can zoom in further and further with bigger and bigger telescopes, until eventually you find gaps where you simply don’t see stars.  For a long time it was thought that the gaps were empty, until the Hubble telescope peered through the darkness by taking a 200 hour exposure of a supposedly empty patch of sky.  What it revealed was a universe full of...