Only one of them serves any practical purpose. None of the others is of any use to us.
The one that does have some useful purpose is Earth. A great many of us would be in a serious pickle without it.
8 planets in the solar system
eight planets in the solar system
8. Funny how you phrase it "your solar system"
There are 8 planets in our solar system: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.
Literally, it says 8 is the planets in the Solar system. What that means is that there are 8 planets in the solar system.
There are 8 planets (including Earth) in the Solar system.
its nine planets in the solar system
8 planets in the solar sytem
There are only 8 planets in this solar system
8
There are 8 planets in the solar system, 6 have at least one moon. Mercury and Venus have no known moons.
There are eight true planets in our solar system.