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(Source: jhnlithgow)
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(Source: greyandglittering)
Sentinels of the Arctic
Image Credit & Copyright: Niccolò Bonfadini
All the Water on Planet Earth
Illustration Credit & Copyright: Jack Cook, Woods Hole Oceanographic Institution, Howard Perlman, USGS
Explanation: How much of planet Earth is made of water? Very little, actually. Although oceans of water cover about 70 percent of Earth’s surface, these oceans are shallow compared to the Earth’s radius. The above illustration shows what would happen is all of the water on or near the surface of the Earth were bunched up into a ball. The radius of this ball would be only about 700 kilometers, less than half the radius of the Earth’s Moon
Flowing Barchan Sand Dunes on Mars
Image Credit: HiRISE, MRO, LPL (U. Arizona), NASA
The people of Mexico were lined up along the streets to see the Pope. This little guy thought otherwise.
(Source: ircimages)