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3 days ago · The volcanic nature of Mercury’s smooth plains was ambiguous on the basis of the imagery returned by the first mission to Mercury, Mariner 10, which made three fly-bys in 1974–1975. Better and more complete imaging by MESSENGER (in orbit 2011–2015) removed any doubt by documenting innumerable ghost craters and wrinkle ridges.
4 days ago · Planet Mercury News. Read science articles and see images of Mercury.
20 hours ago · As Mercury has essentially no axial tilt, crater floors near its poles lie in eternal darkness, never seeing the Sun. They function as cold traps, trapping volatiles for geological periods. It is estimated that the poles of Mercury contain 10 14 –10 15 kg of water, likely covered by about 5.65×10 9 m 3 of hydrocarbons.
20 hours ago · Atmospheric mercury (Hg) emissions and subsequent transport and deposition are major concerns within protected lands, including national parks, where Hg can bioaccumulate to levels detrimental to human and wildlife health. Despite this risk to biological resources, there is limited understanding of the relative importance of different Hg sources and delivery pathways within the protected ...
2 days ago · The lunar surface is covered in lunar dust and marked by mountains, impact craters, their ejecta, ray-like streaks and, mostly on the near side of the Moon, by dark maria ("seas"), which are plains of cooled magma.
2 days ago · July 14, 2024 at 06:55 AM EDT. By WeatherBug Meteorologist, Rob Miller. High pressure system will continue to produce record-challenging heat across the Western U.S. today while heat expands into the Plains. This strong upper-level high pressure will remain settled over the Western U.S. through today into early next week.
5 days ago · At times, the mercury’s ticks upward have come so fast that forecasters, at once awe-struck and unnerved, could hardly keep up. “Remember 20 minutes ago when hitting 117°F was a big deal ...
