[ExI] Rubin observatory begins a 10-year movie of the changing universe

[John Clark]

*The following is from Yesterday's issue of the journal Science: *

*Rubin observatory begins a 10-year movie of the changing universe*
<https://www.science.org/content/article/rubin-observatory-begins-10-year-movie-changing-universe>

*John K Clark    See what's on my list at  Extropolis
<https://groups.google.com/g/extropolis>*
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