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Thursday 3 April 2008

Archive for the 'space' Category

What’s keeping us from Mars? Space rays, say experts

Thursday 3 April 2008 @ 10:31 am

The Earth’s bulk, atmosphere and magnetic field protect life from the solar radiation and the cosmic rays that travel through space. Astronauts have just a thin layer of shielding.

Comments (0) | Posted in space

Oldest-Known Asteroids in Solar System Identified

Monday 24 March 2008 @ 10:16 pm

“We have identified asteroids that are not represented in our meteorite collection and which date from the earliest periods of the solar system,” Sunshine said. “These asteroids are prime candidates for future space missions that could collect and return samples to Earth providing a more detailed understanding of the Solar System’s first few millions of years.”

Comments (0) | Posted in science and nature, space

Light from supernova explosion reaches Earth after traveling 7.5 billion years

Saturday 22 March 2008 @ 2:39 pm

At 7.5 billion light years away, this event far eclipses the previous naked eye record of 2.5 million light years. One light year is 5.9 trillion miles.

Comments (0) | Posted in science and nature, space