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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.
Weak Keys in the Rekeying Paradigm: Attacks on COMET-128 and mixFeed
weak keys authenticated encryption comet
2019/8/6
In this article, we analyze two of the NIST Round 1 Candidates for the Lightweight Cryptography Standardization Process: COMET and mixFeed. We show how AEAD modes that are based on rekeying can be mod...
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...
USGS AND DLR TOPOGRAPHIC MAPPING OF COMET BORRELLY
USGS DLR TOPOGRAPHIC MAPPING COMET BORRELLY
2015/3/16
USGS AND DLR TOPOGRAPHIC MAPPING OF COMET BORRELLY.
Submillimeter Wave Astronomy Satellite observations of Comet 9P/Tempel 1 and Deep Impact
Comet Tempel-1 Radiative Transfer Radio Observations Comets
2014/12/23
On 4 July 2005 at 5:52 UT the Deep Impact mission successfully completed its goal to hit the nucleus of 9P/Tempel 1 with an impactor, forming a crater on the nucleus and ejecting material into the com...
2014年5月7日至12日，第13届COMET国际合作组会议在高能所召开，来自大阪大学、日本高能加速器研究机构（KEK）、九州大学、英国伦敦大学学院、伦敦帝国学院、西伯利亚Budker 核物理研究所、高能物理研究所、南京大学、北京大学、华北电力大学等十多所科研院所的40多位科学家出席，中国科学院高能物理研究所所长王贻芳出席了开幕式并致辞。
Glycine oligomerization up to triglycine by shock experiments simulating comet impacts
comet impacts amino acids peptides shock experiments origins of life
2017/4/10
We conducted shock experiments simulating comet impacts to assess the feasibility of peptide synthesis by such a
process. We used frozen mixture of the amino acid glycine, water ice, and silicate (fo...
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...
Near Infrared Observations of Comet-Like Asteroid (596) Scheila
Infrared Observations Comet-Like Asteroid Scheila
2011/10/12
steroid (596) Scheila was reported to exhibit a cometary appearance and an increase in brightness on UT 2010 December 10.4. We used the IRCS spectrograph on the 8-m Subaru telescope to obtain medium-r...