搜索结果: 1-5 共查到“asteroid”相关记录5条 . 查询时间(0.128 秒)
Method for decoding asteroid interiors could help aim asteroid-deflecting missions（图）
小行星内部 小行星偏转 自旋变化
2023/6/9
NASA hit a bullseye in late September with DART, the Double Asteroid Redirection Test, which flew a spacecraft straight at the heart of a nearby asteroid. The one-way kamikaze mission smashed into the...
Last week, the stuff of Hollywood blockbusters became a reality when NASA launched its Double Asteroid Redirection Test (DART), a small spacecraft that will smash into an asteroid sometime in Septembe...
How asteroid, comet strikes may have delayed evolution of atmosphere（图）
小行星 彗星撞击 大气科学 高层大气物理学
2023/6/21
Between 2.5 and 4 billion years ago, a time known as the Archean eon, Earth’s weather could often be described as cloudy with a chance of asteroid.
Back then, it was not uncommon for asteroids or com...
Planetary Society Offers $50,000 Prize for Asteroid Tagging Designs
Asteroid geostationary
2006/12/20
December 13. 2006,Apophis is an approximately 400 meter near-Earth object (NEO), which will come closer to Earth in 2029 than the orbit of our geostationary satellites. On that pass, the asteroid wil...
Astronomers Confirm Asteroid KW4 is No Threat to Earth -- at Least for a Thousand Years（图）
Asteroid KW4 dynamics
2006/12/4
November 16, 2006，The Arecibo Observatory's powerful radar -- a keen eye aimed into the sky -- has made the most detailed observations ever of a binary near-Earth asteroid. This information provides c...