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Dec032014

Japan Launches Asteroid-chasing Probe To Bring Space Rock Samples To Earth









Earth Causes Asteroid-Quakes

Asteroid Basics: A Space Rock Quiz Asteroids are fascinating for lots of reasons. They contain a variety of valuable resources resource and slam into our planet on a regular basis, occasionally snuffing out most of Earth's lifeforms. How much do you know about space rocks? View full size image Little is known about 1999 JU3 because its low albedo (reflectivity) makes it difficult to gauge its shape and spin. Astronomers estimate that the asteroid is about 2,952 feet (900 meters) across see here and that it rotates once every 7.6 hours. Whatever the Hayabusa2 mission learns will help researchers better understand the early days of the solar system, JAXA officials say. "An asteroid is considered to have information about the birth of the solar system and its later evolution," JAXA officials wrote in a mission description.
Read more: http://www.space.com/27886-japan-launches-asteroid-spacecraft-hayabusa2.html




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