宇宙中有多少星星？

你是否曾经仰望夜空，想知道有多少颗星星? 关注我们! https://twitter.com/LifeNoggin https://facebook.com/LifeNoggin https://www.instagram.com/lifenoggin/ 点击观看更多视频: https://alugha.com/LifeNoggin Life Noggin 是一个每周更新的系列动画节目。无论是科学、流行文化、历史还是艺术，都属于我们的探索范围。我们乐此不疲。 Life Noggin 团队: 导演/配音: http://lifenogg.in/patgraziosi 执行制片人: https://www.youtube.com/IanDokie 市场营销: http://lifenogg.in/JaredOban 动画制作: Steven Lawson 编剧: http://lifenogg.in/KayleeYuhas 来源: http://curious.astro.cornell.edu/people-and-astronomy/the-history-of-astronomy https://asd.gsfc.nasa.gov/blueshift/index.php/2015/07/22/how-many-stars-in-the-milky-way/ https://www.nasa.gov/feature/goddard/2016/hubble-reveals-observable-universe-contains-10-times-more-galaxies-than-previously-thought https://www.space.com/25303-how-many-galaxies-are-in-the-universe.html https://www.universetoday.com/102630/how-many-stars-are-there-in-the-universe/ http://www.esa.int/Our_Activities/Space_Science/Herschel/How_many_stars_are_there_in_the_Universe https://www.nasa.gov/content/goddard/nasa-satellites-catch-growth-spurt-from-newborn-protostar https://www.universetoday.com/24299/types-of-stars/ https://science.nasa.gov/astrophysics/focus-areas/how-do-stars-form-and-evolve http://www.atnf.csiro.au/outreach/education/senior/cosmicengine/stars_types.html https://lco.global/spacebook/protostar/ https://www.skyandtelescope.com/astronomy-resources/the-spectral-types-of-stars/ http://www.star.ucl.ac.uk/~pac/obafgkmrns.html http://hyperphysics.phy-astr.gsu.edu/hbase/Starlog/staspe.html http://astro.unl.edu/naap/ebs/spectraltype.html https://people.highline.edu/iglozman/classes/astronotes/hr_diagram.htm http://astronomy.swin.edu.au/cosmos/H/Hertzsprung-Russell+Diagram http://chandra.harvard.edu/edu/formal/stellar_ev/story/index3.html https://www.universetoday.com/12648/will-earth-survive-when-the-sun-becomes-a-red-giant/ http://www.telescope.org/pparc/res8.html http://astronomy.swin.edu.au/cosmos/N/Neutron+Star https://www.space.com/22437-main-sequence-stars.html

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