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ENLARGE / Following the 2011 M9 Tohoku earthquake, the crust above the plate interface is loaded in extension. Waves from the 2012 M8.6 Sumatra earthquake trigger earthquakes in the loaded crust, which extends the crust offshore and compresses the crust onshore. When the crust onshore is compressed, seismic velocities increase. Credit: […]

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Rendering of the Kepler spacecraft. NASA Enlarge LAST WEEK, ASTRONOMERS—AMATEUR and pro—got excited about some strange results from the Kepler Space Telescope, the NASA observatory tasked with searching for Earth-like planets. As those planets orbit their own distant suns, periodically blocking light from Kepler’s view, the telescope documents the flickers. […]

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The SETI Institute’s Allen Telescope Array in Northern California searches for radio signals that could have been generated by intelligent alien life. Credit: SETI Institute The search for signs of life in a mysterious star system hypothesized to potentially harbor an “alien megastructure” is now underway. Astronomers have begun using the […]

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A meteroite impact event would generate shock waves through the Earth. Credit: NASA Enlarge This article was originally published on The Conversation. The publication contributed this article to Space.com’s Expert Voices: Op-Ed & Insights. The Barringer meteor crater is an iconic Arizona landmark, more than 1km wide and 170 metres deep, […]