不利
发表于 2025-3-28 15:50:10
,Influx of Small Comets into Earth’s Atmosphere,y of Iowa to speculate that small, house-size, comets are constantly entering the upper atmosphere. Such an influx of small objects, if true, would revolutionize understandings of sources of Earth’s water and of the comet-like population of the solar system. The scientific debate spurred by Frank’s
贪婪的人
发表于 2025-3-28 19:40:10
Origin of the Moon,planations under consideration. The . model assumed that the Moon was formed along with the Earth as both accumulated material that was remnant from the gas and dust cloud that coalesced into the Sun. The . model assumed that the Earth was rapidly rotating when it formed and owing to tidal resonance
NAG
发表于 2025-3-29 01:44:48
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抛物线
发表于 2025-3-29 03:11:42
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stress-response
发表于 2025-3-29 10:17:16
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Gnrh670
发表于 2025-3-29 13:11:08
Sources of Gamma-Ray Bursts,the detection of clandestine nuclear explosions in space. This discovery was followed by balloon and satellite observations of the gamma-ray bursts, which were found to be coming from all directions in the sky. A debate arose as to the distance to the sources of the bursts. Were they coming from sou
长处
发表于 2025-3-29 16:46:47
Reflections on Space Science Research, first was the discovery by James Van Allen and his students and colleagues at the University of Iowa of radiation belts surrounding the Earth. These Van Allen radiation belts were an unexpected consequence of Van Allen’s research on cosmic rays using the first few Explorer satellites. The second wa
我的巨大
发表于 2025-3-29 22:09:45
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