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Topic: Tyagaraja Crater

Strange Hollows Discovered on Mercury

 

Written by Dauna Coulter
Science at NASA

NASA - National Aeronautics and Space AdministrationWashington, D.C. – NASA’s MESSENGER spacecraft has discovered strange hollows on the surface of Mercury. Images taken from orbit reveal thousands of peculiar depressions at a variety of longitudes and latitudes, ranging in size from 60 feet to over a mile across and 60 to 120 feet deep. No one knows how they got there.

“These hollows were a major surprise,” says David Blewett, science team member from the Johns Hopkins University Applied Physics Laboratory. “We’ve been thinking of Mercury as a relic – a place that’s really not changing much anymore, except by impact cratering. But the hollows appear to be younger than the craters in which they are found, and that means Mercury’s surface is still evolving in a surprising way.”

Hollows inside the Raditladi impact basin. (Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington)

Hollows inside the Raditladi impact basin. (Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington)

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