Horse-Shaped Nebula Seen in 'Unprecedented' Detail Thanks to New NASA Photos
Recent images of the Horsehead Nebula are the sharpest infrared images ... The latest mission involves four volunteers living ...
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One large Milky Way galaxy or many galaxies? 100 years ago, a young Edwin Hubble settled astronomy’s ‘Great Debate.’
you can calculate its distance from how bright it appears using the inverse square law. The more distant the star is, the fainter it appears. Hubble worked hard, taking images of spiral nebulae ...