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If Earth were the size of a nickel, Mercury would be about as big as a blueberry. There may be ice on the top and bottom of Mercury. Mercury-in-glass thermometers are less used in the 21st century as preference is shifted to other types of thermometers, such as digital, alcohol-filled and organic-based thermometers. Future US, Inc. 11 West 42nd Street, 15th Floor, (This is hot enough to melt lead!) Mercury is only about one-third the size of the Earth. Since the floors of these deep craters are never exposed to direct sunlight, temperatures there remain below the planetary average. Fortnite goes galactic with space-themed skin for new subscription service launch, Losing Arecibo's giant dish leaves humans more vulnerable to space rocks, scientists say, Moon pit diver: This tiny rover could explore the lunar underworld, On This Day in Space! Mercury is the only metal that exists as a liquid at room temperature. Mercury's temperature variations are also attributed to its orbital eccentricity of 0.2056, which is the most extreme of any planet in the solar system. A normal temperature is usually lower in the morning and increases during the day. The average temperature on Neptune is about -360℉. Mercury is the closest planet to the sun. With a radius of 1,516 miles (2,440 kilometers), Mercury is a little more than 1/3 the width of Earth. Mercury's low mass and proximity to the sun keep it from having anything but the thinnest of atmospheres, and this is the reason it must pass on being the hottest planet. Sorry, your blog cannot share posts by email. This means that there is virtually no seasonal variation in surface temperature. Liquid mercury beads and a glass container. https://www.youtube.com/channel/UCUHI67dh9jEO2rvK–MdCSg, Support us at: https://www.patreon.com/universetoday Mercury Facts: Mercury orbits the Sun faster than any other planet. Weather Underground provides local & long-range weather forecasts, weatherreports, maps & tropical weather conditions for the Mercury area. Twitch: https://twitch.tv/fcain New York, The change in temperature on the surface of Mercury is due to its rotation and lack of atmosphere. This collection of mercury facts includes atomic data, the electron configuration, chemical and physical properties, and history of the element. Please refresh the page and try again. The animation can be seen here: Thank you for the article and more so, for giving credit. More stories at: https://www.universetoday.com/ As a result of this and its high eccentricity, the planet experiences considerable variations in temperature between its light side and dark side. It can be as cold as -290 degrees Fahrenheit (-179 degrees Celsius) on Mercury at night. A NASA mission called MErcury Surface, Space ENvironment, Geochemistry, and Ranging (MESSENGER) became the first probe to orbit Mercury in March 2011. it contains mercury, which is a dangerous element. And if you have a news tip, correction or comment, let us know at: community@space.com. These variations are relatively long-lived. Mercury is far denser, however, having a metallic core that takes up about 61 percent of its volume (compared with 4 percent for the Moon and 16 percent for Earth). What is the Average Surface Temperature of Mars? Mercury thermometers can be used to determine body, liquid, and vapor temperature. But although it boasts the most widely varying temperatures in the solar system, it is not the hottest planet How is this possible? The normal oral temperature for older persons is 98.2° F (36.8° C). We have written many interesting articles about the average surface temperatures of the planets. However, further studies revealed that the planet spins very slowly — only three times every two Mercury years, or once every 60 Earth days. The average temperature on Mercury is a balmy 354 degrees F. In addition, since Mercury has virtually no atmosphere to scatter light, the sky would be black, even though the Sun's disk itself would be over twice as large as what we observe from the Earth. Listen to it here, Episode 49: Mercury. This dense metal is atomic number 80 with element symbol Hg. "The neutron data indicates that Mercury's radar-bright polar deposits contain, on average, a hydrogen-rich layer more than tens of centimeters thick beneath a surficial layer 10 to 20 centimeters thick that is less rich in hydrogen," said MESSENGER participating scientist David Lawrence at the Johns Hopkins University Applied Physics Laboratory. But on Mercury, the planet has essentially no tilt, which means that the hemispheres experience no significant difference in temperature from one another. We have also recorded a whole episode of Astronomy Cast that’s just about planet Mercury. And with an average orbital velocity of 47.362 km/s (29.429 mi/s), it takes Mercury a total 87.969 Earth days to complete a single orbit around the Sun. Post was not sent - check your email addresses! how is a glass thermometer read? What is the Average Surface Temperature of Venus? The temperature increase of the mercury is: {eq}\Delta T = 110^\circ {\rm{C}} {/eq} Write the expression for the energy required to raise the temperature of the mercury. I merely animated it. A still increasing amount is used as gaseous mercury in fluorescent lamps, while most of the other applications are slowly phased out due to health and safety regulations and is in some applications replaced with less toxic but considerably more expensive Galinstan alloy. 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