Sentences with phrase «colder outer regions»
Forming in the system's colder outer regions, where volatile compounds such as water and carbon dioxide freeze out, makes it possible that the planets incorporated those ices and carried them along to a warmer place where they could melt, evaporate, and become oceans and atmospheres.
http://www.sciencemag.org/ Not exact matches
In the second paper, physicist Dejan Vinković of the University of Split in Croatia developed a model that shows how a combination of stellar wind and infrared radiation from the inner disk can blow the ultrafine crystallized silicate particles billions of kilometers from the inner regions of a protoplanetary disk to its colder outer sections, where comets and other cold but rocky objects, such as Pluto, can form.
Imagine that such a black hole is orbited by a wide, cold disk of material — like the rings of Saturn but larger than our entire solar system — and that this disk possesses an almost transparent outer region and a denser inner region.
The outer region gets much colder toward the outer edge.
The brown region shows the outer extension of the habitable zone for planets that are massive and cold enough to hold onto molecular hydrogen — a potent greenhouse gas.
Both this molecule and its simpler cousin hydrogen cyanide (HCN) were found in the cold outer reaches of the star's newly formed disk, in a region that astronomers believe is analogous to our own Kuiper Belt — the realm of icy planetesimals and comets beyond Neptune.
For a region to be colder it must be losing energy to a heat sink colder than it is but the only thing colder than the tropopause at -57 C is outer space at -269 C.