Category: Universe and Solar System

Water on Mars

Water on Mars – mostly exists as [A] Ice[B] Liquid[C] Vapour[D] Moisture Water on Mars Some liquid water may occur transiently on the Martian surface today, but limited to traces of dissolved moisture from...

Mars atmosphere

Mars has a thin atmosphere made up mostly of [A] Oxygen[B] Nitrogen[C] Argon[D] Carbon dioxide Mars atmosphere Mars has a thin atmosphere made up mostly of carbon dioxide (CO2), argon (Ar), nitrogen (N2), and...

Galilean Moons

Which is not a ‘Galilean Moon’? [A] Mercury [B] Europa[C] Io[D] Ganymede Galilean Moons The four moons are Io, Europa, Ganymede, and Callisto, in order of distance from Jupiter.