Mars.
It has Olympus Mons as the tallest mountain and Valles Marineris as the deepest canyon.
Mars has the biggest mountain than the others and deeper canyons than the other planets
earth does
Yes
mercury
Cliffs/Canyons in the surface of a planet.
Mars has the biggest mountain than the others and deeper canyons than the other planets
earth does
Yes
mercury
There are many planets that have volcanoes and canyons. The Earth is a wonderful example of a planet with both.
Cliffs/Canyons in the surface of a planet.
MARS
Mercury =)
A universe is bigger than a planet.
A planet is bigger than a university. You probably meant a universe and a universe is bigger than a planet.
A planet is usually bigger. However there are exceptions. For example "Ganymede", the largest satellite of Jupiter, is bigger than the planet Mercury.
Venus is considered to be the hottest planet in the solar system. Venus is referred to as Earths twin due to the canyons, mountains, valleys, and volcanic activity.