3 years ago

216

Source : https://www.cnet.com/news/china-mars-rover-zhurong-makes-historic-landing-on-the-red-planet/
Video : https://www.youtube.com/watch?v=1Ll-VHYxWXU

Some quick Science based news. I am not a journalist just a guy sharing science and tech news I find interesting.

#Shorts #Zhurong #Mars
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What is a Rover?
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A Mars rover is a motor vehicle that travels across the surface of the planet Mars upon arrival. Rovers have several advantages over stationary landers: they examine more territory, they can be directed to interesting features, they can place themselves in sunny positions to weather winter months, and they can advance the knowledge of how to perform very remote robotic vehicle control.

As of May 2021, there have been six successful robotically operated Mars rovers, the first five managed by the American NASA Jet Propulsion Laboratory: Sojourner (1997), Opportunity (2004), Spirit (2004), Curiosity (2012), and Perseverance (2021). The sixth is Zhurong (2021), managed by the China National Space Administration.

On January 24, 2016, NASA reported that current studies on Mars by Curiosity and Opportunity (the latter now defunct) would be searching for evidence of ancient life, including a biosphere based on autotrophic, chemotrophic or chemolithoautotrophic microorganisms, as well as ancient water, including fluvio-lacustrine environments (plains related to ancient rivers or lakes) that may have been habitable.[2][3][4][5][6] The search for evidence of habitability, taphonomy (related to fossils), and organic carbon on Mars is now a primary NASA objective.[2]

Mars 2 and Mars 3 were physically tethered probes; Sojourner was dependent on the Mars Pathfinder base station for communication with Earth; Opportunity, Spirit and Curiosity were on their own. As of May 2021, Curiosity is still active, while Spirit, Opportunity, and Sojourner completed their missions before losing contact. On February 18, 2021, Perseverance, the newest American Mars rover, successfully landed. On May 14, 2021, China's Zhurong became the first non-American rover to successfully operate on Mars.
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Wikipedia

What is Mars?
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Mars is the fourth planet from the Sun and the next planet beyond Earth. It is, on average, more than 142 million miles from the Sun. Mars turns on its axis more slowly than Earth does. So, a day on Mars is 24.6 hours. Since this planet is farther from the Sun than Earth, one revolution of Mars around the Sun is a longer trip. So, a year on Mars is 687 Earth days. Mars is about half the size of Earth. Mars is known as the Red Planet because the iron oxide chemicals in its soil looks like rust.

Mars is named for the ancient Roman god of war. The Greeks called the planet Ares (pronounced Air-EEZ). The Romans and Greeks associated the planet with war because its color resembles the color of blood.

Mars has two small moons. Their names are Phobos (FOE-bohs) and Deimos (DEE-mohs). They are named for the sons of Ares, the Greek god of war. Phobos means “fear,” and Deimos means “panic.”
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From Nasa.gov

What is Mars Like?
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Mars is very cold. The average temperature on Mars is minus 80 degrees Fahrenheit -- way below freezing!

Its surface is rocky, with canyons, volcanoes, dry lake beds and craters all over it. Red dust covers most of its surface. Mars has clouds and wind just like Earth. Sometimes the wind blows the red dust into a dust storm. Tiny dust storms can look like tornados, and large ones can be seen from Earth. Mars’ large storms sometimes cover the entire planet.

Mars has about one-third the gravity of Earth. A rock dropped on Mars would fall more slowly than a rock falls on Earth. A person who weighs 100 pounds on Earth would only weigh about 38 pounds on Mars because of the reduced gravity.

The atmosphere of Mars is much thinner than Earth’s. The Red Planet's atmosphere contains more than 95% carbon dioxide and much less than 1% oxygen. People would not be able to breathe the air on Mars.
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From Nasa.gov

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