Image of Messier 81 (M81). Located about 12 million light-years away in the Ursa Major constellation, M81 is among the brightest of the galaxies visible by telescope from Earth.
Image credit:NASA/JPL-Caltech/ESA/Harvard-Smithsonian CfA
Remains of supernova explosion Cassiopeia A most recent supernova in Milky Way
Dust, stars, and cosmic rays swirling around Comet 67P/Churyumov–Gerasimenko, captured by the Rosetta probe. (Source)
Auroras Colorful Veil Over Earth : NASA astronaut Scott Kelly shared this photograph on social media, taken from the International Space Station on August 15, 2015. Kelly wrote, #Aurora trailing a colorful veil over Earth this morning. Good morning from @space_station! #YearInSpace
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The Carina Nebula - A Birthplace Of Stars
The Carina Nebula lies at an estimated distance of 6,500 to 10,000 light years away from Earth in the constellation Carina. This nebula is one of the most well studied in astrophysics and has a high rate of star formation. The star-burst in the Carina region started around three million years ago when the nebula’s first generation of newborn stars condensed and ignited in the middle of a huge cloud of cold molecular hydrogen. Radiation from these stars carved out an expanding bubble of hot gas. The island-like clumps of dark clouds scattered across the nebula are nodules of dust and gas that are resisting being eaten away by photons (particles of light) that are ionizing the surrounding gas (giving it an electrical charge).
Credit: NASA/Hubble