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New modeling of nuclear device to deflect or destroy asteroids en route to Earth（图）
小行星 核装置 天体物理学
2024/2/1
The same high energy density that makes nuclear energy a clean and efficient source of power could make it a good alternative to defend the planet against catastrophic asteroid impacts. NASA demonstra...
NASA Study Shows Asteroids May Have Accelerated Life on Earth
NASA Asteroids Accelerated Life Earth
2009/5/21
The study focused on a particularly cataclysmic occurrence known as the Late Heavy Bombardment, or LHB. This event occurred approximately 3.9 billion years ago and lasted 20 to 200 million years. In a...
7 March 2007，Large asteroids rotate at a range of different speeds, roughly following a bell-shaped "Gaussian" distribution in which most rotate at a speed close to some average, with only a small pro...