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Posts Tagged "meteorite"

Basic Space

They came from Mars

Computer generated image of Mars at daybreak. Credit: {link url="http://www.nasa.gov/mission_pages/msl/multimedia/gallery/pia14293.html"}NASA/JPL-Caltech{/link}

A glowing fireball descended through the sky over North Africa last July, accompanied by two sonic booms. Observers saw the fireball turn from yellow to green, then split into two parts before one fell to the ground in a valley and the other crashed into a mountain. And then… nothing, for a while. The rocks [...]

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Life, Unbounded

Meteor fireballs across central Russia

Still image of fireball video (RT/Youtube/Potapow)

[Updated:] About 7,000 metric tons of meteor streaked across central Russia on Friday 15th February 2013, its fireball leaving great contrails in the sky and generating explosive shockwaves that smashed windows and damaged buildings. Reports indicate a number of craters a few meters across as the debris impacted the ground. The Earth is constantly encountering [...]

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Observations

Hundreds Reported Injured in Blast from Meteor Strike over Russia [Video]

A meteor fireball lit up the morning sky over Chelyabinsk in central Russia, producing a shock wave that shattered windows and injured an estimated 500 1,000 people.** Although much of the parent object likely burned up in the atmosphere, Russian authorities say that several meteorite fragments have already been recovered, according to the Interfax news agency. A [...]

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Observations

Ammonia from meteorites could have aided start of life on Earth

Graves Nunataks (GRA) 95229 meteorite

Asteroids and comets have long been suspected of helping nudge Earth toward life. The interplanetary interlopers have struck Earth since the beginning, delivering carbon, water, and sometimes organic compounds such as amino acids. By providing key chemicals or even pre-formed biological building blocks, as well as the heat and energy generated by a meteorite impact, [...]

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The Countdown

5 Signs of Life on Mars – The Countdown, Episode 37

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Could Mars support life? In this episode of The Countdown, we run through five intriguing lines of evidence that the red planet was not always as desolate as it appears, and may even be habitable today. More to explore: New Signs of Water on Mars Ramp Up Search for Life (Scientific American) A River Runs [...]

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The Countdown

Black Hole Devours Cosmic Cloud, and More – The Countdown, Episode 27

Links for the top five stories: The Other Blue Planet Neptune’s New Moon Sizing Up Neutron Stars Meteorite Reveals History of Mars’ Crust Black Hole Devours Cosmic Cloud

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