View Full Version : Celestial Laser Show? Nope, These Are Trails Showing Off Star Colors

2013-Dec-19, 03:00 PM
There are so many colorful streaks in that image above that you’d be forgiven for thinking somebody is shooting lasers around the European Southern Observatory (ESO) in Chile. Actually, though, this demonstrates a common technique for astronomy photo-taking where you do a time lapse to watch the stars moving as the Earth makes its daily […]

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