The major presence of water detected on the Moon is inGroup of answer choicesthe puffs of steam seen coming from some still active lunar volcanoes.faint clouds of ice in the thin lunar atmosphere.the floors of deep craters in the polar regions, as ice deposits that never thaw.the flows of mud seen on the walls of some craters.the mare.

Galileo thought the lunar maria might be seas of water. If you had no better telescope than the one he had, could you demonstrate that they are not composed of water?

Select the best evidence to support the statement "Planets and moons are not the only places where one can find water in our solar system." There may be more than one correct choice.Ice is common in our solar system, from deposits at the poles of Mercury and the Moon to ice-covered moons and rings around distant Jupiter and Saturn. Scientists are studying ice on Earth and on other planets, in part because ice deposits could be a source of water for future explorers in the solar system.While the most common type of ice in our solar system is water ice, there are also many other types of ice. Mars' poles have abundant amounts of frozen carbon dioxide (also called dry ice), and comets have frozen ammonia and methane in addition to frozen water and other ices. Saturn's moon Titan is famous for its methane, which can exist not only as a liquid and gas at Titan's surface temperatures and pressures, but also as solid ice.

What do scientists think caused the moon's craters?

Which best replaces the question mark in the box above?A.Finding water on the moon has revived scientific interest in exploring the lunar surface.B.Scientists hope to determine the exact source and quantity of the water on the moon.C.Scientist found at least 25 gallons (95 liters) of water in the forms of ice and vapor on the moon.D.Finding water on the moon could lead to the construction of an astronaut base there.

Which area on the Moon is heavily cratered?