Space

Science

Curiosity Hits Paydirt: New Clues To Life On Mars

1:03pm March 15, 2013

Microbes may once have happily existed on the surface of Mars, according to chemical analysis of a sedimentary rock in the Red Planet's Gale crater. NASA geologist and exobiologist David Blake discusses evidence for an ancient freshwater lake in the crater, and describes the mineral-chomping microbes that may have thrived there.

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Science

A Natural Particle Accelerator, Far Above The Planet

1:03pm March 01, 2013

In 1958, James Van Allen described two belts of radiation that surround Earth. Daniel Baker says that when a satellite was launched to study the belts in 2012, it saw a third belt form, which lasted for about a month before being blasted away by an interplanetary shock wave.

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Science

Tracking A Space Rock's Streak Past Earth

7:14am February 21, 2013

Asteroid 2012 DA14 is half the size of a football field, and whizzing towards the Earth at over 17,000 miles per hour. Don't worry, it won't hit us. But on Friday, February 15th it makes its closest approach, scraping by the Earth's surface closer than many satellites. Join Ira Flatow and Flora Lichtman for special live coverage of this near encounter, with first-hand reports from astronomers around the world.

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A meteor's vapor trail above the city of Chelyabinsk, Russia, on Friday.

World News

'No Link' Between Meteor That Hurt Hundreds And Asteroid That Flew By

3:40pm February 15, 2013

by Mark Memmott

The sights and sounds across Russia's Ural Mountains on Friday as a meteor came roaring in were awesome. There are reports of more than 900 people being injured, most when windows shattered. But European Space Agency experts say there's no connection to the large asteroid that's whizzing past Earth later in the day.

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A child poses for a picture in front of an astronaut space suit at the Kennedy Space Center on the eve of the launch of Space Shuttle Endeavour July 14, 2009 in Cape Canaveral, Fla.

To Infinity And Beyond: Would-Be Astronauts Keep Faith In Uncertain Era

4:58pm February 10, 2013

by NPR Staff

As NASA moves away from manned missions, the private sector is taking on the task. Those hoping for a ride are as eager as ever, and space exploration hasn't lost a bit of its luster.

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Science

Researchers Point To The Demise of the Dinosaurs

1:35pm February 08, 2013

The idea that a comet or asteroid impact led to the downfall of the dinosaurs has been around for years. Now, Paul Renne and colleagues report in Science that they've narrowed down the timing of that collision. It's practically simultaneous with dinosaur extinction.

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NASA Needs Your Help To Feed The Astronauts

9:14am January 25, 2013

Researchers from the University of Hawaii and Cornell University are asking you to send them long-lasting recipes. They want to help NASA determine an extremely durable menu to keep astronauts fed, should the agency send people on a four-month journey to Mars.

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Science

Simulating The Red Planet, On The Pale Blue Dot

1:03pm January 11, 2013

What's it like to live--and cook--on Mars? To find out, researchers are simulating Mars missions in Russia, and on the slopes of a Hawaiian volcano. Kim Binsted talks about her study to whip up tastier space food. Porcini mushroom risotto, anyone? And sleep expert Charles Czeisler talks about how humans adapt to the 24.65-hour Martian day.

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The SciFri Book Club Tours 'The Planets'

11:36am December 26, 2012

The SciFri Book Club is touring the solar system, with Dava Sobel's 2005 The Planets. Call in with a review of the book. Plus Jim Green, director of planetary science at NASA, joins the club to give an update on what's happened planet-wise since the book was published.

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Science

Shooting Stars: Capturing The Night On Camera

11:36am December 26, 2012

Photographer Colin Legg makes time-lapse movies of celestial scenes, from auroras to eclipses. Photographing mostly in remote parts of Australia, where human-made light doesn't compete with starlight, Legg describes some of the challenges of this type of photography: from babysitting cameras for days and nights on end to running electronics in the backcountry.

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