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Hubble’s New H-Alpha Views Reveal Star Birth in Nearby Spirals NGC 2835 and NGC 45

The releases draw on complementary surveys targeting more than 50,000 nebulae across 19 nearby galaxies.

Overview

  • NASA and ESA released an updated Hubble image of NGC 2835 that adds H-alpha data to spotlight dozens of pink nebulae along its spiral arms.
  • NGC 2835 sits about 35 million light-years away, spans roughly 65,000 light-years, and hosts a central black hole estimated at 3–10 million solar masses.
  • H-alpha emission traces H II regions as well as signatures of supernova remnants and planetary nebulae, sharpening maps of recent star formation.
  • A separate Hubble portrait of NGC 45 uses a broad UV-to–near-infrared survey of 50 nearby galaxies plus a focused H-alpha program to examine its star-forming regions.
  • NGC 45 lies about 22 million light-years away and is classified as a low surface brightness galaxy, a category researchers estimate includes roughly 30%–60% of all galaxies.