Well it means to move a planet
Well it means to move a planet
what is meant by a planets day
It's called Mercury, if you meant "nearest to the Sun".
When a planet spins on its axis it is said to rotate. (Think of a top.)
A planet is bigger than a university. You probably meant a universe and a universe is bigger than a planet.
do you mean red planet? if so Mars is referred to as the red planet. never heard of the rad planet...sorry if that's what you meant.
The rotation of a planet refers to the planet spinning like a top; a "revolution" is the time required for the planet's orbit around the Sun.
planet
Deadliest metal band on the planet
If you meant planet then Jupiter with its moon Ganymede.
Most exoplanets are large gas giants, one of those is the largest known planet in the galaxy. If you meant the solar system, then the largest planet is Jupiter.
Galileo's time or possibly earlier. Planet originally meant "wanderer" in greek because of how they moved across the sky. A number of asteroids were called planets at one time because of what the word planet meant back then.