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Why did free hydrogen in terrestrial planets atmosphere escape?
Free hydrogen in terrestrial planets' atmospheres can escape due to their low escape velocities, which results in the hydrogen molecules obtaining enough energy to escape the gravitational pull of the planet. This process is known as atmospheric escape, and is more common in lighter elements like hydrogen. Additionally, interactions with the solar wind and ultraviolet radiation can also contribute to the escape of free hydrogen from a planet's atmosphere.
Why do planets orbit the sun rather than fly off into space?
The gravity of the Sun pulls on the planets and keeps them revolving in their orbits. The planets are moving at relatively high velocities (between 5 and 48 kilometers per second) and thereby resist this gravitational pull, and there is comparatively little friction in space to slow them down. (*the Earth is moving at about 30 km/sec in its orbit, which is 67,000 mph!)
Why will astronauts probably never set foot on any of the giant planets?
I am not sure how probable this is; but here are some of the practical difficulties.The gian planets don't really have any surface where anybody can "set foot on". They are just gas giants; the gas goes way down. An astronaut might be able to set foot on a platform floating in the planet's atmosphere, but not on the planet's surface, since these gas giants have no surface.The gravity of these planets is very strong. On Jupiter, an astronaut would have trouble standing up, since his weight would be more than twice what he weighs on Earth. On Saturn, an astronaut would weigh even less than on Earth - but it would require a tremendous amount of energy to get such an astronaut back out from Saturn. Or any of the giant planets. Look up the "escape velocities" - squaring these velocities gives you an idea of the amount of energy required. For example, on Earth the escape velocity is 11.2 km/second - and escaping from Earth is already a considerable engineering challenge. Saturn's escape velocity is 35.5 km/second - meaning that in theory, it would take about ten times as much energy to escape from Saturn, than it takes to escape from Earth.
How do you increase a planets escape velocity?
Smoke some weed
What four inner planets has almost no atmosphere?
The four inner planets, also known as the terrestrial planets, are Mercury, Venus, Earth, and Mars. Among them, Mercury has almost no atmosphere due to its small size and proximity to the Sun, which causes any gases to escape easily. Mars has a thin atmosphere, primarily composed of carbon dioxide, but it is much less substantial than Earth's. Venus has a thick atmosphere, so it does not fit the criteria of having almost no atmosphere.
Why did free hydrogen in terrestrial planets atmosphere escape?
Free hydrogen in terrestrial planets' atmospheres can escape due to their low escape velocities, which results in the hydrogen molecules obtaining enough energy to escape the gravitational pull of the planet. This process is known as atmospheric escape, and is more common in lighter elements like hydrogen. Additionally, interactions with the solar wind and ultraviolet radiation can also contribute to the escape of free hydrogen from a planet's atmosphere.
Why is it more difficult for gases to escape from Jovian planets than terrestrial planets?
It is more difficult for gases to escape from Jovian planets because they have much stronger gravitational forces due to their larger mass, which means gases are held more tightly to the planet. Terrestrial planets have lower mass and weaker gravity, making it easier for gases to escape into space.
Which process explains why the terrestrial planets do not have hydrogen and helium in their atmospheres?
The terrestrial planets are less massive and therefore have less gravity. As a result, much of the lighter gases could escape, in the process of planet formation.
Why do Jovian planets have a thicker atmosphere than the terrestrial planets?
Jovian planets do not have a solid surface, therefore their atmospheres are thick all the say to where their surface would be. Their atmospheres have more gasses than those surrounding terrestrial planets.
Why were planets closer to the sun not able to retain lighter gases?
Planets closer to the sun have higher temperatures, which causes them to have higher escape velocities. Lighter gases are more easily able to escape a planet's gravitational pull at higher temperatures, resulting in these planets being unable to retain them. Additionally, the solar wind from the sun can strip away lighter gases from planets closer to it.
Does air molecules escape into space?
Air molecules do escape into space it depends on how heavy or hoe light they are. However, lighter molecules of air have greater velocities while heavy molecules of air has less velocities were gravity pulls the air downwards.
Why do planets orbit the sun rather than fly off into space?
The gravity of the Sun pulls on the planets and keeps them revolving in their orbits. The planets are moving at relatively high velocities (between 5 and 48 kilometers per second) and thereby resist this gravitational pull, and there is comparatively little friction in space to slow them down. (*the Earth is moving at about 30 km/sec in its orbit, which is 67,000 mph!)
To escape from a planets gravity an object must reach a speed called the?
Escape Velocity
Why will astronauts probably never set foot on any of the giant planets?
I am not sure how probable this is; but here are some of the practical difficulties.The gian planets don't really have any surface where anybody can "set foot on". They are just gas giants; the gas goes way down. An astronaut might be able to set foot on a platform floating in the planet's atmosphere, but not on the planet's surface, since these gas giants have no surface.The gravity of these planets is very strong. On Jupiter, an astronaut would have trouble standing up, since his weight would be more than twice what he weighs on Earth. On Saturn, an astronaut would weigh even less than on Earth - but it would require a tremendous amount of energy to get such an astronaut back out from Saturn. Or any of the giant planets. Look up the "escape velocities" - squaring these velocities gives you an idea of the amount of energy required. For example, on Earth the escape velocity is 11.2 km/second - and escaping from Earth is already a considerable engineering challenge. Saturn's escape velocity is 35.5 km/second - meaning that in theory, it would take about ten times as much energy to escape from Saturn, than it takes to escape from Earth.
How do you increase a planets escape velocity?
Smoke some weed
Why don't other planets have atmosphere?
Other planets may not have atmospheres due to a variety of factors such as their distance from the sun, composition, size, and lack of magnetic field to protect the atmosphere from being stripped away by solar wind. Additionally, some planets may have had their atmosphere stripped away over time due to various geological processes or impacts from celestial bodies.
How do sideways velocities on the moon compare to sideways velocities on earth?
moon is actually continually falling on us! What prevents it from hitting us is the fact that it is rotating around us with a sideways velocity sufficiently high, so that by the time the Moon has fallen the 240,000 miles to the Earth, it has moved sideways about 240,000 miles, far enough to miss the Earth.
