We know from dating rocks that Earth is about 4.55 billion years old and all models indicate that the planets formed around the same time, possibly with Neptune and Uranus forming a bit later.
Neptune was formed around 4.6 billion years ago, at the same time as the rest of the solar system.
Scientist know this by the color difference on the planets surface.
That is impossible to answer because scientist don't know ALL the galaxies.
We know that we have observed galaxies out to as much as 14 billion light years from us in every direction, and we have never seen an end to it yet.
if you mean neptune...... i know exactly! about.... somewhere between.... 4.3 and 4.7 billion kilometers. so it would take about 2 years! ( i know right?!)
The planet neptune is about 2795084800 miles or 4498252900 kilometers away from the sun. Neptune has over 13 know moons like Triton and nereid.
The orbit time for Neptune is slow.... 164.79 years!!! And just to let you know the rotation period is about 16 hours.
13.75 billion years Answer2: The age is around 16 Billion Light years.
Yes, Neptune does have seasons. However, the seasons on Neptune are different from Earth as they are caused by its tilted axis and extremely long orbital period. One year on Neptune is equivalent to about 165 Earth years.
WE do know that the Earth is 4.6 Billion years old, though how old the other planets are, we aren't quite as sure. the oldest planet is Jupiter scientifictly when the big explotion came it was the first planet to be formed
that could be
Neptune is the eight planet from the sun