By observation through telescopes and fly-bys by spacecraft.
All i know is alot!
Not a lot, because it has ice caps and so Neptune is known for its ice. If it was close to the sun then no ice for Neptune. ~for you!
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well since neptune is almost the farthest planet................................probaby.......................................oh i dont know. silly me answering is for nerds
Yes, every object in the universe has a gravitational pull on every other object. However, Neptune is so much smaller than the Sun, and so much farther away, that Neptune's gravitational pull on Mercury will be unmeasurably small.
Neptune is the eight planet from the sun
Neptune is about 3.88 times larger than the Earth, so about 58.5 Earths could fit inside Neptune.
Temperature relies on distance from the Sun. In order the planets are ... Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Pluto So Mercury is hottest as it is closest to the Sun Mars is closer than Neptune, so is hotter. So Neptune is colder.
Techinically, Forever. But, we don't know that Neptune exists, so we can't say for sure.
I DONT KNOW the answer for that so can you answer that pleae i beg you your friend,thorn
Saturn is much larger than Neptune so it likely has more gas since they are both gaseous.
Neptune is so much larger than Earth you could fit almost 60 Earths inside of it.