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Detected in 2017 and observable for only a few weeks, the first known interstellar object to pass through the solar system confounded astronomers, sparking speculation it could be a giant snowflake, h...
With an eye toward a possible return mission years in the future, Cornell astronomers have shown how smooth terrains – a good place to land a spacecraft and to scoop up samples – evolve on the icy wor...
Comet 67P/Churyomov-Gerasimenko – arguably the most-studied comet in history – has yielded a cosmic surprise: It emits molecular oxygen drawn from its nucleus.
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...
In early July, Comet NEOWISE approached the sun for the first time in nearly 4,500 years. For observers in the Northern Hemisphere, it is now faintly visible toward the Northwest after sunset. When vi...
ALMA reveals unusual composition of interstellar comet 2I/Borisov（图）
ALMA unusual composition interstellar comet 2I/Borisov
2020/4/29
ALMA reveals unusual composition of interstellar comet 2I/Borisov.
Bizarro Comet Challenging Central Florida Researchers
Bizarro Comet Central Florida Researchers
2017/7/24
Scientists pursue research through observation, experimentation and modeling. They strive for all of these pieces to fit together, but sometimes finding the unexpected is even more exciting.That’s...
The San Diego Supercomputer Center (SDSC) at the University of California, San Diego this week formally launched "Comet," a new petascale supercomputer designed to transform scientific research by exp...
ANN ARBOR—A comet-bound spacecraft that spent more than two years in a deep sleep mode woke up on Jan. 20 to begin the home stretch of its decade-long journey to a mile-wide ball of rock, dust and ice...
December 17, 2006，EAST LANSING, Mich. — After nearly 30 years of waiting, Michigan State University’s Michael Velbel finally got his opportunity to analyze some mineralogical samples that were collect...
Stardust Surprise—Comet Dust Is Mixed and Varied（图）
Stardust Comet solar system mineralogy and petrology
2006/12/15
14 December 2006,Microscopic grains collected by a U.S. probe indicate that comets are composed of a wide range of minerals of vastly different origins mixed together, according to a special section o...