Among these theories was the claim that the polar caps of Mars were purely atmospheric cloud formations, rather than ice-covered ground.
42.
The polar caps will certainly melt, the oceans will boil, and the air will have lots of water vapor in it.
43.
Martian surface temperatures vary from lows of about at the winter polar caps to highs of up to in equatorial summer.
44.
He was part of the national contingent of 23 skydivers who made a historical jump over the polar cap on April 21.
45.
"It's like fingers of ozone coming down from the polar caps _ sometimes it goes farther south than it normally would ."
46.
The fear is that higher temperatures could cause droughts and flood island nations and coastal cities with water from melting polar caps.
47.
Both polar caps show layered features that result from seasonal melting and deposition of ice together with dust from Martian dust storms.
48.
Troops and revolutionaries clash incoherently at the polar cap, and Horn is eventually captured and sent to the prison planet of Vantee.
49.
Though colder and drier, Mars has Earth-like seasons, polar caps, enormous amounts of water in permafrost, volcanic mountains and other similarities with Earth.
50.
"Telescopes, even small ones, will allow you to see detail on Mars, including a polar cap and other surface features, " he said.
