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Why do all planets with and without atmospheres collide with meteoroids?
Wiki User
∙ 8y ago
All planets, both with and without atmospheres, encounter meteoroids. If the planet has an atmosphere then those meteoroids will burn up long before reaching the surface. Those without atmospheres do not have such protection and so the meteoroids strike the surface directly.
Wiki User
∙ 8y ago
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Why are gas planets larger than terrestrial?
The masses of the gas giants are greater, which would make them larger, and their gravity can hold more massive atmospheres. Due to limits on the compressibility of atmospheric gases, these atmospheres are very deep. The lower solar heating farther from the Sun also plays a role in allowing these planets to maintain a high percentage of their lighter gases (hydrogen, helium) than the inner planets. So, even without their atmospheres, the cores of gas giants would have greater diameters than the terrestrial planets. They are simply bigger planets.
Which is true about gas giants?
They are pretty large. They are mostly gaseous, without a large metallic core Their atmospheres are very thick. They have several moons. That's not really a feature of gas giant planets, but very massive planets in general.
What is the main difference between the inner planets and the outer planets?
The inner planets are smaller, and do not have the dense atmospheres of the outer planets. The four inner planets (Mercury, Venus, Earth, and Mars) have warmer temperatures than the exteriors of the outer planets (Jupiter, Saturn, Uranus, and Neptune).The "gas giants" have very hot lower atmospheres, caused by the intense pressure. The atmospheres are mostly hydrogen, but for Uranus and Neptune there are higher levels of water, methane, and ammonia. All of the gas giants have multiple moons and rings, the most visible being the ice rings around Saturn.they are divided by inner and outer and the outer planet are the planets that have bigger planets.
What planets are rocky and have no moons?
Mercury and Venus are terrestrial planets, and they are the only major planets without moons.
Planets without solar systems are called?
Planets not orbiting a star but instead orbiting the galactic center are referred to as rogue planets, or nomadic or interstellar planets.
How many planets have atmosphere?
Eight planets in our solar system have atmospheres. These planets are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.
Why are gas giants larger than terrestrial planets?
The masses of the gas giants are greater, which would make them larger, and their gravity can hold more massive atmospheres. Due to limits on the compressibility of atmospheric gases, these atmospheres are very deep. The lower solar heating farther from the Sun also plays a role in allowing these planets to maintain a high percentage of their lighter gases (hydrogen, helium) than the inner planets. So, even without their atmospheres, the cores of gas giants would have greater diameters than the terrestrial planets. They are simply bigger planets.
Why are gas planets larger than terrestrial?
The masses of the gas giants are greater, which would make them larger, and their gravity can hold more massive atmospheres. Due to limits on the compressibility of atmospheric gases, these atmospheres are very deep. The lower solar heating farther from the Sun also plays a role in allowing these planets to maintain a high percentage of their lighter gases (hydrogen, helium) than the inner planets. So, even without their atmospheres, the cores of gas giants would have greater diameters than the terrestrial planets. They are simply bigger planets.
What are astoroids?
Asteroids are metallic, rocky bodies without atmospheres that orbit the Sun but are too small to be classified as planets. http://nssdc.gsfc.nasa.gov/planetary/text/asteroids.txt
Which is true about gas giants?
They are pretty large. They are mostly gaseous, without a large metallic core Their atmospheres are very thick. They have several moons. That's not really a feature of gas giant planets, but very massive planets in general.
Which two terrestrial planets do not have atmospheres?
Mercury is the only planet (and inner planet) without an atmosphere - due to its small size. Mars has an atmosphere, but it is a thin one, mainly of carbon dioxide.
Is it possible planets collide with another?
In the early stages of planet formation, planets did in fact hit other planets. Mercury, Earth and Uranus all have signs of planetary impacts. Nowadays, the solar system is stable and a planetary collision is highly unlikely without some form of external impetus.
What is the main difference between the inner planets and the outer planets?
The inner planets are smaller, and do not have the dense atmospheres of the outer planets. The four inner planets (Mercury, Venus, Earth, and Mars) have warmer temperatures than the exteriors of the outer planets (Jupiter, Saturn, Uranus, and Neptune).The "gas giants" have very hot lower atmospheres, caused by the intense pressure. The atmospheres are mostly hydrogen, but for Uranus and Neptune there are higher levels of water, methane, and ammonia. All of the gas giants have multiple moons and rings, the most visible being the ice rings around Saturn.they are divided by inner and outer and the outer planet are the planets that have bigger planets.
What will happen if you go on other planets?
The two other terrestrial planets in our solar system with atmospheres would not support life. Venus is the hottest planet, with crushing atmospheric pressure. Anyone would die very quickly on its surface without a good space suit. Mars has a very thin atmosphere, mostly carbon dioxide (a greenhouse gas), but essentially no free oxygen either. There are other planets in our galaxy, orbiting other stars. We know what the atmospheres of some of those planets are like. So far we haven't found any much like earth, but that is because earth is small, and only recently have we developed the technology to find planets as small as ours.
Why does Jupiter have to spin?
The planet Jupiter must spin to keep its self up its called gravity and without it all the planets would go around space and collide of worse so it must "spin" to keep "afloat "
How is gravity vital to your existence?
It's not all that vital. All gravity does is collect hydrogen clouds to make stars, collect stars to make galaxies, collect stones to make spherical planets, keep atmospheres around planets, keep loose objects on the surface of planets, and keep the planets in orbits around the stars. If you can do without those details, then there's no real need for gravity.
What planets are rocky and have no moons?
Mercury and Venus are terrestrial planets, and they are the only major planets without moons.
