News tagged with impact craters

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New Blow for Dinosaur-Killing Asteroid Theory

(PhysOrg.com) -- The enduringly popular theory that the Chicxulub crater holds the clue to the demise of the dinosaurs, along with some 65 percent of all species 65 million years ago, is challenged in a paper ...

Apr 27, 2009
4.5 / 5 (33) 14

What created this huge crater in Siberia?

What is it with Russia and explosive events of cosmic origins? The 1908 Tunguska Explosion, the Chelyabinsk bolide of February 2013, and now this: an enormous 80-meter wide crater discovered in the Yamal ...

Jul 17, 2014
4.7 / 5 (24) 30

Mars's mysterious elongated crater

(PhysOrg.com) -- Orcus Patera is an enigmatic elliptical depression near Mars's equator, in the eastern hemisphere of the planet. Located between the volcanoes of Elysium Mons and Olympus Mons, its formation ...

Aug 27, 2010
4.6 / 5 (24) 6 | with audio podcast

Hidden Territory on Mercury Revealed

The MESSENGER spacecraft's third flyby of the planet Mercury has given scientists, for the first time, an almost complete view of the planet's surface and revealed some dramatic changes in Mercury's comet-like ...

Nov 04, 2009
4.8 / 5 (20) 1

Where have all the craters gone?

Impact craters reveal one of the most spectacular geologic process known to man. During the past 3.5 billion years, it is estimated that more than 80 bodies, larger than the dinosaur-killing asteroid that ...

May 28, 2014
4.9 / 5 (15) 4

Iowa meteorite crater confirmed

(Phys.org) —Recent airborne geophysical surveys near Decorah, Iowa are providing an unprecedented look at a 470- million-year-old meteorite crater concealed beneath bedrock and sediments.

Mar 05, 2013
4.9 / 5 (14) 0 | with audio podcast