The ripples suggest that the lake was free of ice at one point.
The most infamous asteroid impact, which struck the Yucatán Peninsula around 66 million years ago, created the Chicxulub crater and is widely believed to have triggered the mass extinction that ...
Space can be a wondrous place, and we've got the pictures to prove it! Take a look at our favorite space pictures here, and if you're wondering what happened to today in space history don't miss ...
Find Haleakala Crater stock video, 4K footage, and other HD footage from iStock. Get higher quality Haleakala Crater content, for less—All of our 4K video clips are the same price as HD. Video Back ...
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