Mercury is the closest planet to sun and the smallest planet in solar system. With a diameter of about 3,032 miles (4,880 km), Mercury is less than half the size of The earth, is about 7,926 miles (12,756 km) in diameter. But what Mercury lacks in size, it makes up for in speed: It orbits the sun faster than any other planet in the solar system.
How did Mercury get its name?
The planet is named after the Roman god Mercury, the speedy messenger of the gods, the Greek equivalent of the Greek god Hermes. Mercury orbits our Sun once every 88 days – faster than any other planet in the Solar system – and a year on Mercury is less than three Earth months. This rapid orbit inspired the ancient Romans to associate the minor planet with Mercury, according to Cool Cosmosa website run by the Center for Infrared Processing and Analysis at the California Institute of Technology, while the ancient Greeks associated the planet with Hermes, according to European Southern Observatory.
Mercury is visible in night sky has no telescope and has been known to people all over the world for thousands of years. According to Cool Cosmos.
Is Mercury the hottest planet?
Since Mercury is the planet closest to the sun, you might think it’s the hottest. However, Mercury lacks a atmosphere just as Earth can trap and trap heat, so the side facing the sun is always very cold – especially given that it takes about 59 Earth days for Mercury’s slow rotation to complete one rotation. According to NASA.
Venus, the second planet from the sun, is the hottest because it has a dense atmosphere that traps heat from the sun’s rays. Venus has a surface temperature of about 860 degrees Fahrenheit (462 degrees Celsius) and remains just as hot day and night, Live Science previously reported.
Related: The sun blew away Mercury with a wave of plasma
What is mercury made of?
Mercury mainly consists of iron, according to Museum of Natural History in London, United Kingdom It has an inner core with an outer core of liquid metal and is enclosed in a mantle and crust, much like the Earth. Mercury’s inner core is solid and roughly Earth-sized, although Mercury is generally a much smaller planet, a 2019 study published in the journal Geophysical research letter Find.
Instead of a full atmosphere, Mercury has an exosphere – the name for the thin outer layer of Earth’s atmosphere. Mercury’s exosphere is formed by solar winds and meteor strikes that blast atoms off its surface, according to NASA. The exosphere gives Mercury its dripping protection from objects such as asteroids, and the planet is pitted with craters, to the point that Mercury looks similar to Earth. moon. None of the moons orbit Mercury because it’s so close to the sun that the sun’s gravity can pull them away, according to the Natural History Museum in London, according to the Natural History Museum in London.
What is Mercury retrograde?
Mercury in retrograde is when the planet appears to be moving in reverse across the sky. It’s an optical illusion caused by the human point of view of seeing smaller planets catch up and overtake Earth Live Science previously reported as it curves around the sun. Some astrologers associate Mercury retrograde with disruption to everyday life on Earth, but there is no scientific evidence for this.
Jean-Luc Margot, a professor of astronomy and planetary science at the University of California, Los Angeles, said: “The idea is that gravity from these very distant objects affects our lives in one way or another. Something doesn’t work within physics. previously told Live Science.
Retrograde mirages occur with other planets that Earth passes through, and it is not uncommon. According to Diary of an old farmer.
Related: Mercury probe captures stunning images of our planet as Earth flies by
Is there life on Mercury?
Scientists still have a lot to learn about Mercury, but they have no reason to think it harbors life. According to NASA. Furthermore, thanks to probes such as the MESSENGER (Mercury Surface, Space Environment, Geochemistry and Aurora) spacecraft, about 98% of Mercury’s surface has been imaged in detail, according to the report. MESSAGE website.
MESSENGER confirmed evidence of water freezing on Mercury in 2011. Ice is condensed at the poles in the crater so it is shielded from the sun’s rays. Much of this ice may have been brought to Mercury on asteroids. However, a 2020 study published in Astrophysical Journal Letters found that mercury can make up to 10% of its own ice.
Here’s how: Mercury’s surface has minerals with linked groups of oxygen (O) and hydrogen (H) atoms called hydroxyls, which can become energetic under the sun’s extreme heat sky and collide to create water molecules (H2O). While the sun also breaks down these molecules, some drift around the planet and ends up in cold craters at the poles to form iceLive Science’s sister site Space.com reported earlier.
“It’s a bit like the song ‘Hotel California.’ Water molecules can check the darkness, but they can never leave,” the study’s principal investigator Thomas Orlando, a professor in the Georgia Institute of Technology’s School of Chemistry and Biochemistry, said in one declare at that time.
For a gallery of images of Mercury taken by the probes, see NASA Jet Propulsion Laboratory website. To learn more about the Mercury retrograde illusion, check out this short YouTube video by Vox. For more information on the MESSENGER probe mission, visit NASA’s in-depth Page MESSENGER.
Originally published on Live Science.
https://www.livescience.com/mercury-planet Mercury: Facts about the smallest planet