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Full rotation of Mars
277,671 次观看 • 3 年前 •via X (Twitter)
8 条评论

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I know damn well life once existed on that planet. Can’t tell me otherwise

- Mars is the fourth planet from the Sun and the second-smallest planet in the solar system after Mercury¹. - Mars is also known as the Red Planet because of its reddish color, which comes from the iron oxide (rust) in its rocks and soil³. - Mars has two small, irregular moons named Phobos and Deimos, which are thought to be captured asteroids². - Mars has a thin atmosphere composed mainly of carbon dioxide, with traces of nitrogen, argon, oxygen, and water vapor². The atmospheric pressure on Mars is only about 0.6% of that on Earth². - Mars has seasons, polar ice caps, volcanoes, canyons, and weather, but its climate is much colder and drier than Earth's². The average temperature on Mars is about -81 degrees F (-63 degrees C), but it can range from -195 degrees F (-125 degrees C) at the poles to 70 degrees F (20 degrees C) near the equator². - Mars is one of the most explored planets in our solar system, with several orbiters, landers, and rovers sent by various space agencies. The first successful landing on Mars was by NASA's Viking 1 in 1976². The most recent mission to Mars is NASA's Perseverance rover, which landed in February 2021 and carries a helicopter named Ingenuity². Xenon 129 is a rare isotope of xenon, a noble gas that does not react easily with other elements. Xenon 129 can be produced by nuclear fission or by cosmic ray bombardment of other elements. Xenon 129 is found in higher abundance in the Martian atmosphere than expected, which suggests that some processes in the surface material on Mars have contributed to its formation⁴⁵. One possible explanation is that neutrons from cosmic rays have been transferred from barium or bromine atoms to xenon atoms, creating more xenon 129 isotopes⁴⁵. These isotopes could have been released into the atmosphere by impacts or gas escape from the regolith (the soil and broken rocks) of Mars⁴⁵. Xenon 129 can be used as a tracer to study the evolution and erosion of the Martian atmosphere over time⁴⁵. Bing, 13.8.2023 (1) Mars Facts | All About Mars – NASA Mars Exploration. (2) Facts about Mars | Facts for kids - National Geographic Kids. (3) Overview | Mars – NASA Solar System Exploration. (4) Curiosity Finds Evidence of Mars Crust Contributing to Atmosphere. (5) Curiosity Finds Evidence of Mars Crust Contributing to Atmosphere.

Fun Fact: Currently, a day on the red planet is about the same as one on Earth: 24.6 hours. According to @NASA , that length will shorten by a fraction of a millisecond per year based on data that shows the planetary rotation increasing by roughly 4 milliarcseconds per year.

i don't see any martians.

Cool!!

@WH_Y

Wow, Mars spins really fast
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