It is also used in amalgams for dentistry, preservatives, heat transfer technology, pigments, catalysts, and lubricating oils. is the fastest planet in our solar system – traveling through space at nearly 29 miles per second. Since Mercury is the fastest planet and has the shortest distance to travel around the Sun, it has the shortest year of all the planets in our solar system – 88 days. Currently available drugs for acute mercurial poisoning include chelators N-acetyl-D, L-penicillamine , British Anti-Lewisite , 2,3-dimercapto-1-propanesulfonic acid , and dimercaptosuccinic acid .


Researchers will use Webb to observe 17 actively forming planetary systems. NASA’s Parker Solar Probe has taken its first visible light images of the surface of Venus from space. A new study finally reveals higher-frequency X-rays and explains why they eluded another mission 30 years ago. Mercury is a rocky planet, also known as a terrestrial planet.

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Its distribution in the environment is the result of both natural and man-made processes. There are three categories of mercury with unique characteristics and unique potential health effects. Mercury spins slowly compared to Earth, so one day lasts a long time. Because it’s the closest planet to the sun, it goes around the Sun in just 88 Earth days. Along with Venus, Earth, and Mars, Mercury is one of the rocky planets.

  • Mercury hydride, a colorless gas, has the formula HgH, containing no Hg-Hg bond.
  • The probe successfully entered an elliptical orbit around the planet on March 18, 2011.
  • Mercury’s core has a higher iron content than that of any other major planet in the Solar System, and several theories have been proposed to explain this.
  • Messenger was launched in 2004, flew past the planet twice in 2008 and once in 2009, and settled into orbit in 2011.
  • Ganymede, a moon of Jupiter, and Titan, a moon of Saturn, are both larger than Mercury, the smallest major planet.
  • Mercury deposits were discovered in the New World, and more than 100,000 tons of mercury were mined from the region of Huancavelica, Peru, over the course of three centuries following the discovery of deposits there in 1563.

Abandoned What is Mercury mine processing sites often contain very hazardous waste piles of roasted cinnabar calcines. Water run-off from such sites is a recognized source of ecological damage. For example, in 1976 Santa Clara County, California purchased the historic Almaden Quicksilver Mine and created a county park on the site, after conducting extensive safety and environmental analysis of the property. „BBC Radio 4 – More or Less, Sugar, Outdoors Play and Planets”. In astronomy, the words „rotation” and „revolution” have different meanings. The potential energy liberated by moving down the Sun’s potential well becomes kinetic energy, requiring a delta-v change to do anything other than pass by Mercury.

The novel use of mercury allows very compact atomic clocks, with low energy requirements, and is therefore ideal for space probes and Mars missions. The deep violet glow of a mercury vapor discharge in a germicidal lamp, whose spectrum is rich in invisible ultraviolet radiation. Mercury-containing compounds are also of use in the field of structural biology. Mercury chloride, a colorless solid also known as calomel, is really the compound with the formula Hg2Cl2, with the connectivity Cl-Hg-Hg-Cl. It reacts with chlorine to give mercuric chloride, which resists further oxidation.

Our technical sophistication and analytical rigor surpass any other firms that offer fleet management consulting services. Small-scale gold refining is a major cause of air pollution from mercury. EPA helped design a low-cost mercury capture system that is simple to build and install, uses locally available materials, and reduces mercury emissions by at least 80%. Mercury is the smallest planet in our solar system – only slightly larger than Earth’s Moon. Because of Mercury’s elliptical – egg-shaped – orbit, and sluggish rotation, the Sun appears to rise briefly, set, and rise again from some parts of the planet’s surface. The EPA announced new rules for coal-fired power plants on 22 December 2011.

Solar System

The number of confirmed exoplanets has crossed the 5,000 mark. Mercury’s thin atmosphere, or exosphere, is composed mostly of oxygen , sodium , hydrogen , helium , and potassium . In 2008, Denmark also banned dental mercury amalgam, except for molar masticating surface fillings in permanent teeth. Mercury poisoning can result in several diseases, including acrodynia , Hunter-Russell syndrome, and Minamata disease. Historically, one of the largest releases was from the Colex plant, a lithium isotope separation plant at Oak Ridge, Tennessee. Records are incomplete and unclear, but government commissions have estimated that some two million pounds of mercury are unaccounted for.


Mercury is an extremely rare element in Earth’s crust, having an average crustal abundance by mass of only 0.08 parts per million . Because it does not blend geochemically with those elements that constitute the majority of the crustal mass, mercury ores can be extraordinarily concentrated considering the element’s abundance in ordinary rock. The richest mercury ores contain up to 2.5% mercury by mass, and even the leanest concentrated deposits are at least 0.1% mercury . It is found either as a native metal or in cinnabar, metacinnabar, sphalerite, corderoite, livingstonite and other minerals, with cinnabar being the most common ore. Mercury ores often occur in hot springs or other volcanic regions. Aristotle recounts that Daedalus made a wooden statue of Venus move by pouring quicksilver in its interior.

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NIOSH Pocket Guide to Chemical Hazards The NIOSH Pocket Guide to Chemical Hazards helps workers, employers, and occupational health professionals recognize and control workplace chemical hazards. Mercury, the innermost planet of the solar system and the eighth in size and mass. Its closeness to the Sun and its smallness make it the most elusive of the planets visible to the unaided eye. Because its rising or setting is always within about two hours of the Sun’s, it is never observable when the sky is fully dark. The industry is facing an existential crisis because of unyielding power of Big Tech platforms…

Maximum temperature occurs when the Sun is at an angle of about 25 degrees past noon due to diurnal temperature lag, at 0.4 Mercury days and 0.8 Mercury years past sunrise. Alternatively, Mercury may have formed from the solar nebula before the Sun’s energy output had stabilized. It would initially have had twice its present mass, but as the protosun contracted, temperatures near Mercury could have been between 2,500 and 3,500 K and possibly even as high as 10,000 K.

The vent floors are at least 1 km below their brinks and they bear a closer resemblance to volcanic craters sculpted by explosive eruptions or modified by collapse into void spaces created by magma withdrawal back down into a conduit. Scientists could not quantify the age of the volcanic complex system but reported that it could be on the order of a billion years. There is evidence for pyroclastic flows on Mercury from low-profile shield volcanoes.


Mercury can be absorbed through the skin and mucous membranes and mercury vapors can be inhaled, so containers of mercury are securely sealed to avoid spills and evaporation. Heating of mercury, or of compounds of mercury that may decompose when heated, should be carried out with adequate ventilation in order to minimize exposure to mercury vapor. The most toxic forms of mercury are its organic compounds, such as dimethylmercury and methylmercury.

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They appear in all states of degradation, from relatively fresh rayed craters to highly degraded crater remnants. Mercurian craters differ subtly from lunar craters in that the area blanketed by their ejecta is much smaller, a consequence of Mercury’s stronger surface gravity. According to International Astronomical Union rules, each new crater must be named after an artist who was famous for more than fifty years, and dead for more than three years, before the date the crater is named. Mercury’s surface is similar in appearance to that of the Moon, showing extensive mare-like plains and heavy cratering, indicating that it has been geologically inactive for billions of years. It is more heterogeneous than the surface of Mars or the Moon, both of which contain significant stretches of similar geology, such as maria and plateaus. Albedo features are areas of markedly different reflectivity, which include impact craters, the resulting ejecta, and ray systems.

Resort Enhancement Area Manager Dawn Pipal-Keehne shares secrets of how she and her team of 60 transform the parks for the holidays. In addition, the company announced the hiring of Spruce board member Steven Pho as CEO. Pho had previously been an executive with HEB-Favor Delivery and RetailMeNot. Austin-based Topl, the world’s only blockchain built to track and monetize social impact initiatives, has closed a $15M Series A round.

The „4” is a reference number in the Sumero–Akkadian transliteration system to designate which of several syllables a certain cuneiform sign is most likely designating. The Greco-Egyptian astronomer Ptolemy wrote about the possibility of planetary transits across the face of the Sun in his work Planetary Hypotheses. He suggested that no transits had been observed either because planets such as Mercury were too small to see, or because the transits were too infrequent. An alternate method for viewing Mercury involves observing the planet during daylight hours when conditions are clear, ideally when it is at its greatest elongation. This allows the planet to be found easily, even when using telescopes with 8 cm (3.1 in) apertures. However, great care must be taken to obstruct the Sun from sight because of the extreme risk for eye damage.

Artificial lakes, or reservoirs, may be contaminated with mercury due to the absorption by the water of mercury from submerged trees and soil. For example, Williston Lake in northern British Columbia, created by the damming of the Peace River in 1968, is still sufficiently contaminated with mercury that it is inadvisable to consume fish from the lake. Permafrost soils have accumulated mercury through atmospheric deposition, and permafrost thaw in cryospheric regions is also a mechanism of mercury release into lakes, rivers, and wetlands. As electrodes in some types of electrolysis, batteries , sodium hydroxide and chlorine production, handheld games, catalysts, insecticides.