Nothing to do, planet Earth is blue
SummaryWhile we may not have heard of any planet other than eight planets, it might strike you as unlikely and implausible that the Sun is the only star in all those unimaginable billions that has planets around it.
How many planets do we know about? Most of us would answer that with “eight". That would have been “nine" while Pluto was considered a planet, which it was from the time of its discovery until it was demoted to “minor planet" status in 2006. So eight it is: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.