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Mars's atmosphere is stirred by a single planet-wide loop of circulation, and a new analysis reports that the loop's own structure keeps dust and gas from mixing across its edge while carrying…
Picture watching a street parade through a crack in a wall. Whatever passes the slit, you see. What passes to the left and right of it you miss, and the sliver you do see tells you nothing about…
Two reference models of Venus's atmosphere disagree with 18 years of spacecraft temperature measurements by more than 10 K, or 10 degrees Celsius, according to a paper posted to the arXiv preprint…
Mars has lost most of its air. Its krypton, though, is essentially where it started — a heavy noble gas still sitting in what is left of an atmosphere that a young Sun's wind spent hundreds of…
A rock came off the East Antarctic Ice Sheet in 2008. Cataloged as DOM 08006, for the Dominion Range where it was collected, it is one of the most primitive meteorites ever recovered, a lump that…
Follow the Moon through a month and its brightness does something that simple arithmetic cannot account for. It climbs as the lit crescent fattens, roughly in step with the growing area of sunlit…
The mantle beneath the southern highlands of Mars still preserves a thermal anomaly of 200 to 400 °C. The study, published Aug. 26 in Nature, inferred this internal temperature from radio tracking of…
A study published Aug. 23 in AGU Advances by a team from MIT and the University of Arizona proposes that waves inside the buried ocean of Saturn's moon Enceladus carve the four parallel fissures that…
Line up the rocky part of Earth against the Sun, element for element, and most of the list matches. Then you reach the elements that boil off easily, the ones that need somewhere cool and quiet to…
Four researchers say they have extracted a planet-circling pressure wave directly from Mars weather data for the first time, using more than one Martian year of readings from the pressure sensor on…
In March 1974, as Mariner 10 swept past Mercury for the first time, its instruments recorded something nobody had ordered: bursts of energetic electrons, arriving in gusts, around a planet that had…
For decades, every thermometer pointed at Io read the same thing: its skin. Infrared cameras aboard Galileo, and more recently Juno's own JIRAM instrument, catch the glow of the surface and the lava…