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Asteroid 99942 Apophis (2004 MN4).


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Asteroid.
Asteroid 99942 Apophis (2004 MN4) swings past the Earth in 2029.

Asteroid Close Call Will Be a Gain for Science.

Researchers from the University of Michigan are predicting that when asteroid 99942 Apophis (2004 MN4) swings past the Earth in 2029, it will get so close that Astronomers should learn a tremendous amount about how the Earth's gravity can shift asteroid orbits. The researchers are hoping that a space agency will put instruments on the surface of the asteroid to measure seismic data, similar to the way seismologists use earthquakes to probe the Earth's interior.

Proof of Life in our Solar System?.

This is part 2 of an edited transcript of a presentation given by Pamela Conrad, a NASA astrobiologist who has been travelling to the ends of the Earth to study the extremes of life. In this second part, Conrad continues her explanation of how studying cold deserts here on Earth can aid the search for life in our Solar System.

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