fuckyeahspaceexploration:

The Fermi Gamma-ray Space Telescope orbits Earth with a complicated motion. This map shows the position of a particular pulsar (the Vela pulsar) inside the field of view of the telescope as it orbits around the Earth rocking north/south; rolls to keep its solar panels facing the Sun; and processes around its axis once ever 54 days. It is a compound of these three motions that gives rise to this image.

nodularity:

Global Warming

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guardian:

Photograph: NASA

This image shows ocean surface currents around the world during the period from June 2005 to December 2007. See more satellite images of the earth in our gallery.

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the-star-stuff:

How Much Water is On Earth?

In this illustration, the blue ball represents the volume of all the water on earth, relative to the size of the earth. The tiny speck to the right of the blue ball represents Earth’s fresh water. CREDIT: David Gallo/WHOI 

If Earth was the size of a basketball, all of its water would fit into a ping pong ball.

How much water is that? It’s roughly 326 million cubic miles (1.332 billion cubic kilometers), according to a recent study from the U.S. Geological Survey. Some 72 percent of Earth is covered in water, but 97 percent of that is salty ocean water and not suitable for drinking.

“There’s not a lot of water on Earth at all,” said David Gallo, an oceanographer at the Woods Hole Oceanographic Institution (WHOI) in Massachusetts.

Perspective.

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"The four words that will define this century: The Earth is full."

@paulgilding at TED (via kateoplis)

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