Whodunit? Mystery Lines Show Up in Satellite Image of Caspian Sea
Tuesday, May 3, 2016 19:50
% of readers think this story is Fact. Add your two cents.
by Stephanie Pappas
Live Science
From 438 miles (705 kilometers) up, the floor of the north Caspian Sea looks like someone's just scoured it with a Brillo Pad. What could these bizarre marks be? Trawling scars? Propeller marks in sea algae or seagrass? An extraterrestrial message?
Don't get out the tinfoil hat yet: NASA scientists say these mystery lines are the work of sea ice.
NASA Goddard Space Flight Center ocean scientists noticed the image this month, shortly after it was acquired by the Operational Land Imager on the Landsat 8 satellite, according to NASA's Earth Observatory. The space agency put out the puzzler on Twitter, asking readers what the lines might be.
Strange scour marks are visible on the bottom of the north Caspian Sea in this image acquired by the Landsat 8 satellite on April 16, 2016.
Credit: NASA images by Norman Kuring, NASA's Ocean Color web
Credit: NASA images by Norman Kuring, NASA's Ocean Color web
Every Day is Earth Day
Source: http://www.riseearth.com/2016/05/whodunit-mystery-lines-show-up-in.html
