A Double Star Cluster (NGC869 and NGC884 in Perseus)
Image credit: Oleg Bryzgalov
https://twitter.com/Sciences_Avenir/status/1003976989911502848?s=09
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Stephen Youll
Artist: Dean Ellis
Le scorbut, maladie mortelle du XVIIIe siècle, fait son retour aux États-Unis
https://twitter.com/futurasciences/status/1024924292344045568?s=09
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The progression of astrophotography since the 19th century (Henry, 1879; Henry, 1885; Hubble, 2015; Go, 2017)
Saturn & Dione - 2005
NASA/JPL-Caltech/SSI/Kevin M. Gill
Blue Sand Dunes on Mars [2880x1800]