what are similarities between earth and mars?
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Mars is only about one-half the diameter of Earth, but both planets have roughly the same amount of dry land surface area. This is because over two-thirds of the Earth's surface is covered by oceans, whereas the present surface of Mars has no liquid water.
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It has a similar size, mass, density and gravity, as well as a very similar chemical composition. In other ways, Venus is very different than Earth, with its high surface temperature, crushing pressure, and poisonous atmosphere.
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It is one of several units for timekeeping on Mars. A sol is slightly longer than an Earth day. It is approximately 24 hours, 39 minutes, 35 seconds long. A Martian year is approximately 668 sols, equivalent to approximately 687 Earth days.
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Venus compared with the Earth. Venus is often named as Earth's twin because both worlds share a similar size, surface composition and have an atmosphere with a complex weather system. The figure on the right compares Venus and Earth spacecraft images.
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The gravitational attraction between the Earth and Mars is 8.7 x 1016 N. The distance between the two planets is 5.5 x 1010m.
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The trip takes around seven months; a bit longer than astronauts currently stay on the International Space Station. The precise duration of each journey depends on when it is taken. Because both Mars and Earth's orbits are not perfectly circular, the time it takes to travel between them varies from six to eight months.
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Mars is much smaller, with a diameter of only 6,792 km. And again, in terms of mass, Venus is almost Earth's twin. It has 81% the mass of Earth, while Mars only has 10% the mass of Earth. The climates of Mars and Venus are very different, and very different from Earth as well.
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Sols, or Martian solar days, are only 39 minutes and 35 seconds longer than Earth days, and there are 668 sols (687 Earth days) in a Martian year. For convenience, sols are divided into a 24-hour clock.
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Problem 2 - Earth is twice as big as Mars, but only 1/11 the size of Jupiter. How large is Jupiter compared to Mars? Answer: Jupiter is 11 x Earth, and Mars is 1/2 Earth, so Jupiter is 22x Mars.
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Mars is a planet with a very similar daily cycle as the Earth. Its sidereal day is 24 hours, 37 minutes and 22 seconds and its solar day 24 hours, 39 minutes and 35 seconds. A Martian day (referred to as “sol”) is therefore approximately 40 minutes longer than a day on Earth.
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As seen from Mars, the Earth is an inner planet like Venus (a "morning star" or "evening star"). The Earth and Moon appear starlike to the naked eye, but observers with telescopes would see them as crescents, with some detail visible.
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[' Named after the Roman God of war, Mars is the fourth planet from the sun in our solar system.', " Mars is also known as the 'Red Planet' because, well, it's red! ... ", ' Mars is the second smallest planet in the solar system after Mercury.']
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There is no need to readjust on Mars. Also, because Mars's day is relatively short, the day-to-night temperature difference is not too dramatic, while on the moon, the day is very hot and the night is very cold. ... Mars has an atmosphere. Not really a great atmosphere, but some atmosphere.
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The main similarities are that they all have solid surfaces, are fairly similar in size, especially when compared with the Outer Planets, possess a small number of moons and take a relatively short length of time to complete an orbit around the Sun. In space terms, they are also quite close to each other.
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The moon orbits the Earth and the Earth orbits the sun . A similarity for all of them is that they are all in the same galaxy, The Milky Way. A similarity for the moon and the sun is that both can't support life. A similarity is that the Earth ,moon ,and the sun are all involved in lunar and solar eclipses.
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At their closest, Earth and Mars are 225 million kilometers apart, which is equal to 12.5 light minutes, making the journey from Earth to Mars, if a straight line course was possible, twelve and a half minutes at Warp 1.
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-Though Mars is just over 2x times larger in diameter than the Moon, it's also more than 143 times farther away, even at its said hypothetical closest.