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Mars has two relatively small (compared to Earth's) natural moons, Phobos (about 22 kilometres (14 mi) in diameter) and Deimos (about 12 kilometres (7.5 mi) in diameter), which orbit close to the planet. The origin of both moons is unclear, although a popular theory states that they were asteroids captured into Martian orbit.
There is a large distance between Mars and Earth, so immediate command to a lander is almost impossible. A landing relies highly on its autonomous system. To avoid failure, precise understanding of the gravity field of Mars is essential for the landing projects, so that offsetting factors and uncertainties of gravitational effects could be ...
Mars is differentiated, which—for a terrestrial planet—implies that it has a central core made up of high density matter (mainly metallic iron and nickel) surrounded by a less dense, silicate mantle and crust. [4] Like Earth, Mars appears to have a molten iron core, or at least a molten outer core. [5]
If you weighed 100 lbs on Earth, you would weigh only 38 lbs on Mars. Olympus Mons is a 68,897 ft high volcano that formed billions of year ago on Mars. It is the tallest standing mountain ...
NASA released a stunning image on Friday showing our home planet as well as the moon from Mars.
Comparison of the abundance of carbon dioxide, nitrogen, and argon in the atmospheres of Earth, Venus, and Mars. Despite the high concentration of CO 2 in the Martian atmosphere, the greenhouse effect is relatively weak on Mars (about 5 °C) because of the low concentration of water vapor and low atmospheric pressure. While water vapor in Earth ...
Despite all appearances to the contrary, Earth and Mars have more than a few similarities. Both planets are in our sun’s Goldilocks Zone, where conditions are just right for the possibility of ...
The geology of solar terrestrial planets mainly deals with the geological aspects of the four terrestrial planets of the Solar System – Mercury, Venus, Earth, and Mars – and one terrestrial dwarf planet: Ceres. Earth is the only terrestrial planet known to have an active hydrosphere.