Sentences with phrase «less gravity near»

Not exact matches

While larger planets could have sufficient gravity to attract a massive hydrogen - helium atmosphere, smaller planets — like Mars or Mercury that have less than half the Earth's mass — located in or near their star's habitable zone may lose their initial life - supporting atmosphere because of low gravity and / or the lack of plate tectonics needed to recycle heat - retaining carbon dioxide gas back into the atmosphere (Kasting et al, 1993).

So it's all gases at greatest density will be doing the same thing around the planet at the same time (*) and as these change with differences in density in the play between gravity and pressure and kinetic and potential from greatest near the surface to more rarified, less dense and absent any kinetic to write home about the higher one goes, then, energy conservation intact, the hotter will rise and cool because losing kinetic energy means losing temperature, thus cooling they which began with the closest in density and kinetic energy as a sort of band of brothers near the surface will rise and cool at the same time whereupon they'll all come down together colder but wiser that great heights don't make for more comfort and giving up their heat will sink displacing the hotter now in their place when they first went travelling.