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You’d think it would be easy to tell if an object in space was a star or a planet – is it big, hot, and shining? It’s a star! Small, cool, and made of rock and gas? Planet! But cosmic oddities know as brown dwarfs remind us that the universe is more complicated and interesting than that.
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Sources:
https://iopscience.iop.org/article/10.3847/1538-4357/aadadc/meta
https://arxiv.org/abs/1707.00277
https://rd.springer.com/chapter/10.1007/978-3-319-01162-2_4
https://www.nasa.gov/feature/goddard/2018/nasa-s-webb-telescope-to-investigate-mysterious-brown-dwarfs
https://imagine.gsfc.nasa.gov/science/objects/dark_matter2.html
https://www.newscientist.com/article/dn8851-brown-dwarfs-weighed-directly-for-first-time/
http://coolcosmos.ipac.caltech.edu/cosmic_classroom/cosmic_reference/brown_dwarfs.html
https://starchild.gsfc.nasa.gov/docs/StarChild/questions/question62.html
http://www.astronomy.com/news/2018/09/are-brown-dwarfs-stars-planets-or-neither
http://blogs.discovermagazine.com/d-brief/2018/05/09/brown-dwarf-rogue-planet-pulsar/#.XWkG4JNKjUK
Image Sources:
https://www.nasa.gov/feature/goddard/2018/superflares-from-young-red-dwarf-stars-imperil-planets
https://www.nasa.gov/mission_pages/sunearth/science/solar-anatomy.html
https://spaceplace.nasa.gov/planet-what-is/en/
https://www.jpl.nasa.gov/infographics/infographic.view.php?id=10685
https://exoplanets.nasa.gov/news/1450/scientists-improve-brown-dwarf-weather-forecasts/
https://www.nasa.gov/centers/jpl/images/content/718050main_pia16609-640.jpg
https://www.nasa.gov/centers/jpl/images/content/718055main_pia16608-full.jpg
https://exoplanets.nasa.gov/news/1450/scientists-improve-brown-dwarf-weather-forecasts/
https://svs.gsfc.nasa.gov/12278
https://svs.gsfc.nasa.gov/vis/a010000/a010600/a010659/index.html
https://commons.wikimedia.org/wiki/File:Blausen_0527_Hydrogen-2_Deuterium.png
https://svs.gsfc.nasa.gov/vis/a010000/a012600/a012660/Dwarf_Scale_Final_5k.png
https://commons.wikimedia.org/wiki/File:Artist%E2%80%99s_impression_of_the_expected_dark_matter_distribution_around_the_Milky_Way.ogv
https://www.nasa.gov/sites/default/files/thumbnails/image/pia21752-16.gif
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