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Engineers inspect the James Webb Space Telescope’s ‘pathfinder telescope’ after its second super-cold optical test in Chamber A at NASA’s Johnson Space Center. Credit: NASA/ Chris Gunn Enlarge Recently, the James Webb Space Telescope’s “pathfinder telescope,” or “Pathfinder” completed its second super-cold optical test that resulted in the first checkout […]

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The Antarctic ice sheet. Credit: Stephen Hudson / Wikipedia Massive volcanic eruptions could cause localised warming that might destabilise some of the world’s biggest ice sheets, according to new research from Durham University. Scientists investigated links between very large volcanic eruptions and polar temperatures during the last Ice Age. Their […]