Earth 1, asteroids 0: The next generation of planetary defense takes shape at JPL
The NEO Surveyor fulfills a 2005 act of Congress ordering NASA to catalog 90% of near-Earth objects larger than 459 feet, ...
Knowridge Science Report6 天
Earth-like planets may be more common than we thought
Even more exciting, the model suggests that some Earth-like planets could form in the habitable zone—the region around a star ...