Comet 67P/Churyumov–Gerasimenko preserved the pebbles that formed planetesimals
نویسندگان
چکیده
منابع مشابه
Comet 67P/Churyumov-Gerasimenko preserved the pebbles that formed planetesimals
Solar System formation models predict that the building-blocks of planetesimals were mmto cm-sized pebbles, aggregates of ices and non-volatile materials, consistent with the compact particles ejected by comet 67P/Churyumov-Gerasimenko (67P hereafter) and detected by GIADA (Grain Impact Analyzer and Dust Accumulator) on-board the Rosetta spacecraft. Planetesimals were formed by the gentle gravi...
متن کاملSmall planetesimals in a massive disk formed Mars
0019-1035/$ see front matter 2013 Elsevier Inc. A http://dx.doi.org/10.1016/j.icarus.2013.03.006 ⇑ Corresponding author. Fax: +81 52 789 2838. E-mail addresses: [email protected] (H. Kobay (N. Dauphas). Mars is likely to be a planetary embryo formed through collisions with planetesimals, which can explain its small mass and rapid formation timescale obtained from Hf–W chronometry. In the cla...
متن کاملLithophagia: pebbles in and pebbles out.
Fig. 1 : X-ray abdomen of the patient showing pebbles in rectum and the anal canal 35 year old male patient hailing from Sivani, madhya Pradesh had come with complaints of passing watery stools, dull aching pain in the abdomen since 10 to 15 days. Patient had been a case of mental retardation since childhood. he was noticed passing pebbles along with passage of watery stools. On further enquiry...
متن کاملRings, igloos, and pebbles of salt formed by drying saline drops.
It is well-known that evaporation of sessile drops with suspended particles like colloids and coffee powders can yield a variety of two-dimensional patterns depending on the particle shapes and internal flow patterns. Here we show that ordered three-dimensional structures can be built via evaporation of saline drops on highly hydrophobic substrates like pristine PP (polypropylene) with micropor...
متن کاملFlipping Pebbles
We are trying to understand exactly how complicated these orbits are. A moment’s thought reveals that the toggle operation is reversible, so the orbit of any sequence must be a cycle. A few computational experiments suggest that the length of the cycle associated with a sequence of length n is about 2 and thus has exponential length. This leads to a natural computational question that we will r...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2016
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/stw2299