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Scientists believe that most of the planets coalesced at about the same time, 4.5 billion years ago.
However, though they all formed at roughly the same time, many scientists believe that the gas giants formed faster than the rocky planets, taking tens of millions of years rather than hundreds of million years to grow into planets. Also generally, the nearer the sun the faster the planet will tend to grow to full size. So, Jupiter was probably the first planet and therefore the oldest planet in the solar system, by a few million years ahead of Saturn, and Mercury is probably the oldest rocky planet in our solar system.
What else can I help you with?
Give the list of planets closest to the sun?
In order, the list of planets closest to the sun (from closest to farthest), Mercury, Venus, Earth, Mars.
List of planets in order that orbit the moon?
No planets are in orbit around the moon
Are all stars and planets are about the same age?
All of the planets are in the same atmosphere. All of the planets are unique. All of the planets are considered planets. All of the planets have moons. All of the planets are named after a mythical person or thing.
List planets according to mass?
Jupiter Saturn neptune uranus earth venus mars mercury
Stars are approximately the same age as their orbiting planets?
Yes. for a given system, the age of the planets and the central star would be about the same, as the planetary disc would have formed in one go. Most of the mass would go into the central star, with the remaining material in orbit slowly developing into the planets we have today.
What list contains only outer planets?
It would be a list of the outer planets.
Give the list of planets closest to the sun?
In order, the list of planets closest to the sun (from closest to farthest), Mercury, Venus, Earth, Mars.
List the three most famous scientists of the Hellenistic Age?
Aristarchus found out the planets revolved around the sun, not he sun revolved around Earth.
List of planets in order that orbit the moon?
No planets are in orbit around the moon
List inner planets and why they are inner planets?
The inner planets are Mercury, Venus, Earth, and Mars. They are "inner" because the are the first 4 planets from the Sun.
What will the people do with Pluto?
there going to take it out of our planets list
How many planets have ring list them?
over 9000
Where can a person find a list of the order of the planets in our Solar System?
If you visit the NASA website or even search for the "Milky Way", you can get a list of planets in our solar system. There are only 9 planets, 8 if you don't count dwarf planet Pluto.
Are all stars and planets are about the same age?
All of the planets are in the same atmosphere. All of the planets are unique. All of the planets are considered planets. All of the planets have moons. All of the planets are named after a mythical person or thing.
How many planets are there in the solor systym?
As of 2014, according to the IAU there are 8 planets.
List planets according to mass?
Jupiter Saturn neptune uranus earth venus mars mercury
What are the examples of dwarf planet?
in our solar system planets outside the boundary of Uranus are plutoids (all trans-Neptunian dwarf planets are plutoids) (Ceres is the only dwarf planet which originated in the asteroid belt.below is the list of well known dwarf planets according to orbital distance from the sun:-CeresPlutoHaumeaMakemakeErisbelow is the list of nearly certain dwarf planetsSednaQuaoarOrcus2007 OR10
