• Welcome, Stargazer!

    1,208 views 3 weeks ago
    ...in which I try to win your subscription with pretty photos.

    Galaxy collision visualisation credit: NASA; ESA; G. Besla, Columbia University; and R. van der Marel, STScI Show less
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  • ASTRO TOP 5s Play all

    Counting down the Universe, one subject at a time. New episodes every Saturday!
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