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Solar Eruptions - A Coronal Mass Ejection The swirling inner layers of our sun cause charged particles to generate magnetic fields. As charges accumulate on the surface, magnetic field lines readjust themselves and release huge quantities of matter and electromagnetic radiation into space. This particular Mass Ejection is traveling at over 900 miles per second and has an energy level equivalent to 160,000,000,000 megatons of TNT. Credit: NASA/Solar Dynamics Observatory/Goddard…

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This Hubble Space Telescope image centers on the 100-million-solar-mass black hole at the hub of the neighboring spiral galaxy M31, or the Andromeda galaxy, the only galaxy outside the Milky Way visible to the naked eye and the only other giant galaxy in the local group. This is the sharpest visible-light image ever made of the nucleus of an external galaxy.

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NGC 6357: Cathedral to Massive Stars | How massive can a normal star be? Estimates made from distance, brightness and standard solar models had given one star in the open cluster Pismis 24 over 200 times the mass of our Sun, making it one of the most massive stars known. This star is the brightest object located just above the gas front in the featured image.

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Baby Star Emerges From Hot Cocoon A large hot molecular cloud around a very young star was discovered by ALMA. This hot cloud is about ten times larger than those found around typical solar-mass baby stars, which indicates that the star formation process has more diversity than ever thought.

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Monster Solar Flare This Year Was the Best-Observed in History (Video, Photos) | Space.com See how solar flares, sun storms and huge eruptions from the sun work in this SPACE.com infographic. View the full solar storm infographic here. Credit: Karl Tate/SPACE.com

Monster Solar Flare This Year Was the Best-Observed in History (Video, Photos) | Space.com See how solar flares, sun storms and huge eruptions from the sun work in this SPACE.com infographic. View the full solar storm infographic here. Credit: Karl Tate/SPACE.com

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