A pingo formed by doming of frozen ground due to freezing of injected water supplied by expulsion of pore water during permafrost aggradation in the closed talik under a former water body.
A pingo formed by doming of frozen ground due to freezing of injected water supplied by expulsion of pore water during permafrost aggradation in the closed talik under a former water body
A cosmological model, first formulated by Friedmann and Lemaître, in which the Universe has a finite size and lifetime and space has a positive curvature, e.g. a Universe with a density greater than t
he critical density.
In a star cluster, coming across of two stars so closely that their orbits alter by their mutual gravitational attractions. As regards an asteroid or comet, a situation when it crosses the Moon's orbi
t and approaches the Earth with a risk of collision.
Sea ice terminology that describes floating ice that has a concentration of 7/10 to 8/10. It is composed mostly of ice floes that are in contact with one another.