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An Asteroid Visited Us From Outside the Solar System!

Earth has received its first speedy visitor from another star system, A/2017 U1, and the Dawn Mission has helped astronomers gather more evidence about possible former oceans on Ceres.

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Sources:

A/2017 U1
https://www.nasa.gov/feature/jpl/small-asteroid-or-comet-visits-from-beyond-the-solar-system
https://www.scientificamerican.com/article/astronomers-spot-first-ever-space-rock-from-another-star/
https://www.sciencedaily.com/terms/near-earth_object.htm
http://www.ifa.hawaii.edu/info/press-releases/interstellar/

Ceres
http://onlinelibrary.wiley.com/doi/10.1002/2017JE005302/abstract
https://www.sciencedirect.com/science/article/pii/S0012821X17304405
https://www.jpl.nasa.gov/news/news.php?release=2017-277
https://www.jpl.nasa.gov/news/news.php?feature=6980
http://earthsky.org/space/ceres-ocean-2-new-studies-oct-2017
https://phys.org/news/2013-05-team-moon-mascons-mystery.html

Images:

https://en.wikipedia.org/wiki/File:C2017U1.gif
https://en.wikipedia.org/wiki/File:LyraCC.jpg
https://commons.wikimedia.org/wiki/File:Ceres_-_RC3_-_Haulani_Crater_(22381131691).jpg
https://en.wikipedia.org/wiki/File:Dawn_Flight_Configuration_2.jpg
https://en.wikipedia.org/wiki/File:Interior_Structure_of_Ceres_-_diagram.svg
https://en.wikipedia.org/wiki/File:PIA20354-Ceres-DwarfPlanet-MercatorMap-HAMO-20160322.jpg

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