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Are the planets in the solar system closer to the larger sunlight than the planets? – Gafryl, 10 years old, Padoca, Kentucky
A cloud of collapsed gas created our sun, the first thing to be formed in our solar system. This happened 4 billion years ago.
Then the planets began to appear, as billions of gas molecules and dust remaining from the formation of the sun became a flat tablet.
Known as Protoplanite tabletIt was enormous and surrounded by the sun for billions of miles. Inside the disk, the gas and dust molecules began to collision, sclerosis and paste together, such as ice chips that collect together to form ice balls.
When particles clung together, microscopic pills became gravel -sized beings, then grown and slept. Some have become a rock the size of baseball balls, others the size of the home, and a few of the planet.
This process, It is called accumulationIt is how everything appeared in the solar system – planets, moons, comets and asteroids – into existence.
Iceline
By studying computer models and monitoring Create other stars systemsand Astronomers Like us They have learned a lot about the first days of our solar system.
When the sun was still formed and the protoplantic disc was making planets, there was a distance from the sun where the atmosphere was sufficiently cold until the ice came together. This place, Iceline – Snow line was sometimes called the asteroid belt now, which is between Mars and Jupiter.
Today, of course, the ice is found on almost every planet, Even on mercury. But at the time, the young protoplantis was outside the ice line enough enough to get it. Ice, gas and dust, and they move to each other for millions of years, and accumulate into huge bodies that eventually become giant planets – Jupiterand Saturnand Uranus and Neptune.
While all this was happening, the smaller planets inside the ice line were also formed. But with less raw materials to work with it, Mercuryand Venusand land and Mars It took longer.
Today, Jupiter and Saturn are believed to be the largest planet, they were The first to be completely formedBoth in a few million years. Uranus and Neptune were the following, within 10 million years. The inner planets, including Earth, took at least 100 million years, and perhaps more.
In other words, the four closest planets to the sun are the smallest. The two planets are further, the smallest; The two between them, the oldest. The difference may be between the youngest and oldest planets 90 million years.
This looks like a big difference in age, but in space, 90 million years old This time is not long Less than 1 % of the total time The universe was present. One way to look at: Think about the Earth as a little sister with a big brother, Jupiter, who is 2 or 3 years old.
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Soon after the composition, the giant worlds began to migrate, move inward towards the sun or out from the sun, before finally settled in their final orbits.
For example, Hajar Neptune abroadSwitching places with Uranus, and pushing many small icebergs to Koyber beltA place in the outer solar system that takes over the dwarf planets home Plutoand Iris and McMic And millions of comets.
During, Jupiter moved insideIts enormous attractiveness forced some of the planets that form on the sun, where they disintegrated. Along the way, Jupiter took out some smaller rocks from the solar system completely; The rest went to Asteroid.
But more importantly, as Jupiter settled in its own orbit, it was transferred to all component organs and The site is likely to end From the remaining inner planets, including Earth.
Both Jupiter helped put our planet in the so -called “Goldilocks area“Only a place on the right distance of the sun, where the earth can have liquid water on its surface and the appropriate temperature for life to develop. If Jupiter does not constitute the way it was, it is possible that life is completely possible to ignite on the ground – and we will not be here today.
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This article has been republished from ConversationAn independent, non -profit news organization brings you facts and trusted analysis to help you understand our complex world. Written by: Christopher Palmaand Pennsylvania State and Lucas Brevkaand Pennsylvania State
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Lucas Brefka receives funding from NASA Exoplanet.
Christopher Palma does not work for, consulting or owning shares in or receiving funding from any company or organization that will benefit from this article, and no related affiliations exceeded its academic appointment.
