Amazing Photos of How Clouds Cast Thousand-Mile Shadows Into Space

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While on board the International Space Station, geophysicist Alexander Gerst spent a lot of time looking back down to Earth from 205 miles above.  In his tenure aboard the ISS he took loads of photographs, documenting hurricanes, floods, dust storms, and oil fields.  One of his favorite things, however, was taking pictures of how clouds cast shadows.  The results can be quite dramatic.

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Carl Sagan’s Solar-Powered Spacecraft Gets a Test Flight

solar spacecraft

Carl Sagan once proposed the idea of sailing through the cosmos via a solar-powered spacecraft.  This spaceship would use sunlight radiation to power its flight much like a boat uses the wind for propellant.  On May 20th, the Sagan co-founded Planetary Society will initiate its first test flight for such a solar vehicle:  the LightSail.

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Tonight: The Remnants of Halley’s Comet Brings Us The Eta Aquarid Meteor Shower

Eta Aquarids

The second meteor shower of the year will be in the form of the Eta Aquarids, an event that springs from the result of the passing of Halley’s Comet.  The Eta Aquarids is an annual event that runs from around April 19th through May 28th.  This year, the peak viewing time will be May 4 through Tuesday night, May 5th.

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