Astronomers find signatures of a 'messy' star that made its companion go supernova

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Astronomers announced that they have identified the type of companion star that made its partner in a binary system, a carbon-oxygen white dwarf star, explode. Through repeated observations of SN 2015cp, a supernova 545 million light years away, the team detected hydrogen-rich debris that the companion star had shed prior to the explosion.
via Science Daily
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Cosmic telescope zooms in on the beginning of time

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Observations from Gemini Observatory identify a key fingerprint of an extremely distant quasar, allowing astronomers to sample light emitted from the dawn of time. Astronomers happened upon this deep glimpse into space and time thanks to a foreground galaxy acting as a gravitational lens, which magnified the ancient light. The Gemini observations provide critical pieces of the puzzle in confirming this object as the brightest appearing quasar so early in the history of the universe.
via Science Daily
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X-ray pulse detected near event horizon as black hole devours star

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New findings are the first demonstration of a tidal disruption flare being used to estimate a black hole's spin.
via Science Daily
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Lifting the veil on star formation in the Orion Nebula

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Astronomers describe their discovery that stellar wind from a newborn star in the Orion Nebula is preventing more stars from forming nearby.
via Science Daily
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Long-duration space missions have lasting effects on spinal muscles

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Astronauts who spend several months on the International Space Station have significant reductions in the size and density of paraspinal muscles of the trunk after returning to Earth, reports a new study.
via Science Daily
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