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Why are the inner planets are believed to have been formed by?
The inner planets, Mercury, Venus, Earth, and Mars, are believed to have formed by the process of accretion in the protoplanetary disk surrounding the young Sun. In this region, higher temperatures led to the condensation of metallic and rocky materials, allowing these solid materials to clump together and form planetesimals. Over time, these planetesimals collided and merged, gradually building up the inner planets. This process resulted in smaller, rocky planets compared to the gas giants found in the outer solar system.
Where is the inner planets located?
The inner planets have been known about since ancient times. Astronomers in Ancient Egypt, Greece and Persia all would have studied the skies and noticed the inner planets. The planets, of course, are completely different to stars, as stars are 'fixed' in the sky (as we look at them, anyway), while planets seem to meander around going nowhere in particular. The odd behaviour led astronomers to attribute this to godly doings...
Is Venus an inner planet or outer planet?
Venus is one of the "Inner" planets, along with Mercury, Earth and Mars. The "Outer" planets are Jupiter, Saturn, Uranus, Neptune and Pluto (which has recently been stripped of it's true "planet" status!) Inner planets are also known as "Terrestrial Planets" because they have a rocky surface. The difference between inner and outer planets is there location within or beyond the asteroid belt. Of course, inner planets are within the belt, while the outer ones are beyond the belt.
Who discovered inner planets?
The inner planets Mercury, Venus, and Mars have been known since ancient times, before history was written down. It wasn't until much later that Earth was found to be a planet as well, and it took a number of people to demonstrate this truth.
Why do you have terrestrial planets and gas giants?
As the Sun came into life, the lighter elements (hydrogen and helium etc) were "blasted" away from the Sun, while the heavier elements (iron and rock) stayed closer to the Sun. These heavier elements coalesced into the inner or terrestrial planets, while the lighter elements, now further from the Sun, passed, what is known as the ice line [See related link]. The reduction in temperature allowed the lighter elements to condense into solid particles and the gas giants or Jovian planets began to form. Many of the exoplanets that have been found are too close to their star to have formed in this manner but it is believed that they were formed outside of the ice line and have subsequently been drawn closer to their host star.
Why are the inner planets are believed to have been formed by?
The inner planets, Mercury, Venus, Earth, and Mars, are believed to have formed by the process of accretion in the protoplanetary disk surrounding the young Sun. In this region, higher temperatures led to the condensation of metallic and rocky materials, allowing these solid materials to clump together and form planetesimals. Over time, these planetesimals collided and merged, gradually building up the inner planets. This process resulted in smaller, rocky planets compared to the gas giants found in the outer solar system.
When did Mars form?
It is believed, and all suggests that the entire solar system was formed at the same time. There is no reason to believe that Mars has been formed before or afterwards the other planets.
How hot are the inner planets?
how would we know? have we been there?
Where is the inner planets located?
The inner planets have been known about since ancient times. Astronomers in Ancient Egypt, Greece and Persia all would have studied the skies and noticed the inner planets. The planets, of course, are completely different to stars, as stars are 'fixed' in the sky (as we look at them, anyway), while planets seem to meander around going nowhere in particular. The odd behaviour led astronomers to attribute this to godly doings...
Why the the sun and all the planets are believed to have been formed at the same time?
It has been believed that there was a big unknown mass of material.It collided with some other thing and broke into pieces which are the planets.The middle part remained as it was and it is called the Sun.
Once the planets were formed were there any more major collisions on the terrestial planets?
Yes, as a matter of fact it is believed that Venus was hit with a massive asteroid and that's why it spins retrograde(opposite) of the other planets. Our very own Earth has been struck by hundreds of asteroids.
Is Venus an inner planet or outer planet?
Venus is one of the "Inner" planets, along with Mercury, Earth and Mars. The "Outer" planets are Jupiter, Saturn, Uranus, Neptune and Pluto (which has recently been stripped of it's true "planet" status!) Inner planets are also known as "Terrestrial Planets" because they have a rocky surface. The difference between inner and outer planets is there location within or beyond the asteroid belt. Of course, inner planets are within the belt, while the outer ones are beyond the belt.
Why do outer planets have more moons than inner planets?
The outer 4 planets have many more moons than the 4 inner ones. (Mercury, Venus, Mars, and Earth only have a total of three, whereas Jupiter and Saturn have more than 60 each.) The "outer planets" of our solar system (the 4 gas giants) are much larger than the "inner planets". They also have more space between their orbits, and therefore a larger number of small bodies (some of which were captured as moons). The gravitational effect of the Sun is lower, so satellites can orbit at greater distances without being destabilized.
Are there four inner planets and four outer planets in the solar system?
Yes. Mercury, Venus, Earth, & Mars are inner planets while jupitar, saturn, uranus, and neptune are outer planets. NB For technical reasons, Pluto is not a planet nor has it been since 2006.
Who discovered inner planets?
The inner planets Mercury, Venus, and Mars have been known since ancient times, before history was written down. It wasn't until much later that Earth was found to be a planet as well, and it took a number of people to demonstrate this truth.
Which planet is one of the inner planets?
'Inner planets' are traditionally defined as Mercury, Venus, Earth, and Mars.This is because of a vast difference in orbital distances separating 'Inner' planets from the 'Outer' planets.It has been theorized that the Asteroid Belt, between the orbits of Mars and Jupiter, is the remains of a fifth inner planet that was destroyed by collisions with other minor 'Planetoids' or asteroids. and earth is cool
When was the sun believed to have been formed?
About 10 billion years ago.
