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Around two billion years from now the Earth would have warmed, boiling away the oceans and eradicating all forms of life. However Griffin suggests that the microbial world might be the last state of life to be found on our planet, before the Sun grows so hot that, they too, are snuffed out. Image Credit: Detlev Van Ravenswaay/SPL
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Hubble Sees Evidence of Water Vapor at Jupiter Moon
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Alien "Earth"
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Knobby terrains in Arcadia Planitia, northern lowland of Mars (HiRISE ESP_019853_2410)
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Megablocks of varying sizes embedded within mass-transport deposits of the Jackfork Group in Arkansas, USA. Pinnacle State Park exposure. Image facilitated by Roger Slatt.
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LLNL scientist Benjamin Santer and his climbing group ascend Mt. St. Helens via the "Dogshead Route" in April 1980, about a month before its major eruption. The group was the last to reach the summit of Mt. St. Helens before its major eruption that May. New research by Santer and his colleagues shows that volcanic eruptions contribute to a recent warming "hiatus."
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False colour composite of a ‘glory’ seen on Venus on 24 July 2011. The image is composed of three images at ultraviolet, visible, and near-infrared wavelengths from the Venus Monitoring Camera. The images were taken 10 seconds apart and, due to the motion of the spacecraft, do not overlap perfectly. The glory is 1200 km across, as seen from the spacecraft, 6000 km away. Copyright ESA/MPS/DLR/IDA
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Three images showing the glory at ultraviolet (left,) visible (centre) and near-infrared (right) wavelengths as taken by the Venus Monitoring Camera. The feature was observed on 24 July 2011 and measures 1200 km across, as seen from the spacecraft, 6000 km away. Copyright ESA/MPS/DLR/IDA
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Simulated views of the glory phenomena on Venus (left) and Earth (right), without considering any effects of haze or background cloud brightness. Glories occur when sunlight shines on cloud droplets – water particles in the case of Earth, sulphuric acid particles for Venus. The main difference between the appearance of the glory on Venus and on Earth is not because of composition, but rather the particle size. Cloud droplets on Earth are typically between 10 and 40 thousandths of a millimetre in diameter, but on Venus the droplets found at the cloud tops are much smaller, typically no more than 2 thousandths of a millimetre across. Because of this, the coloured fringes are further apart than they would appear on Earth. Copyright C. Wilson/P. Laven
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Stanford assistant professor Kate Maher holds up two different soil types. The soil on the left is young, dark, and composed of more chemically reactive minerals. The sample on the right is older and made up of less reactive minerals such as clays. Matthew Rothe.
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This image shows a long collection of ridges and scarps on the planet Mercury called a fold-and-thrust belt. The belt stretches over 336 miles (540 kilometers). The colors correspond to elevation—yellow-green is high and blue is low. Image courtesy NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington
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The Martian landscape appears barren today, but Curiosity is helping scientists piece together the Red Planet’s watery past. Credit: NASA/JPL-CalTech
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Measuring geological time Two pyroclastic vents on the floor of Mercury’s Kipling crater, top, would likely not have survived the impact; they are more recent. The false color image of the same spot, bottom, marks pyroclastic material as brownish red.
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