NASA’s Dawn Mission to Vesta and Ceres—the two largest asteroids orbiting the Sun in the main asteroid belt between Mars and Jupiter—is producing some remarkable results. It is the only spacecraft ever to orbit two destinations beyond Earth and the
How did life originate on Earth? Could life have been “seeded” on Earth by organic-rich asteroids colliding with our planet? Dante S. Lauretta, professor of Planetary Sciences/Lunar and Planetary Laboratory at the University of Arizona, has spent his career
You didn’t have to be in Chelyabinsk, Russia, on Feb. 15 of this year to know that a piece of the sky fell on the earth that day with a low rumbling blast that shattered thousands of windows and injured
On a daily basis, about a hundred tons of comet dust and asteroid fragments collide with the Earth. Most burn up in the atmosphere. However, a kilometer-size or larger asteroid could someday collide with the Earth, causing a global disaster.