![](http://www.alamy.com/thumbs/6/CC3F032C-D160-48F2-AE02-ED24EA2ACB73/D4T7G0.jpg)
Inside the observatory, an astronomer makes observations with a large refractor telescope at the 3RF astronomy campus in Texas.
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Photo credit: © John Davis / Stocktrek Images / Alamy / Afripics
License: Royalty Free
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