space
Bitcoins in Space: Private Deep-Space Venture Aims to Launch 'BitSats'
The Bitcoin symbol resembles a dollar sign with a double-barred letter B.
April 24th, 2014
Bitcoins soon may go off the grid and into space. One private venture is aiming to launch a cluster of tiny satellites that would broadcast the latest bitcoin transactions from orbit.
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Flying Robots Play Theme of '2001: A Space Odyssey' (Video)
Still Frame from 'Flying Robot Rockstars'
April 24th, 2014
The agile drones play a variety of specially rigged musical instruments — including drums, guitar and keyboard — during their performance of the famous song. They also play several other ditties, including the "Star Spangled Banner."
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Moon Glows with Earthshine Over Italian Citadel (Photos)
Moon Rises Over Citadel by Giuseppe Petricca
April 24th, 2014
Night sky photographer Giuseppe Petricca of Pisa, Italy, took these gorgeous images on March 3 of the crescent moon illuminated with earthshine over an Italian citadel. See how he did it.
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Mystery Solved! Super-Bright Supernova Was Magnified by Cosmic Lens
Field Before the Supernova
April 24th, 2014
An incredibly bright supernova spotted in 2010 has been the subject of a stellar mystery until now.
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Can Iconic 'Earthrise' Photo Help Protect Earth from Asteroid Impacts?
Apollo 8 Earthrise
April 24th, 2014
The NASA astronaut who snapped the 20th century's most famous photograph of Earth from space hopes the image can continue helping to protect the planet — not just from the depredations of its human inhabitants, but also from incoming space rocks.
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Venus and the Moon Shine Together at Dawn This Week: Where to Look
Venus and the moon will shine bright in the southeastern morning sky before sunrise on April 25 and 26 in 2014. This sky map shows the location of Venus and the moon (as well as Neptune) in the morning sky on April 25 as seen from mid-northern latitudes.
April 24th, 2014
If your skies are clear before dawn on Friday and Saturday (April 25 and 26), check out the sky low to the east-southeast horizon about 60 to 90 minutes before sunrise for a view of the two brightest objects in the nighttime sky: the moon and Venus.
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