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We Finally Know What Elements Are Contained in an Exploded Supernova

NASA’s Chandra X-Ray Observatory has been taking a long, hard look at one of the Milky Way’s most famous and studied objects – the remnant of an exploded star, Cassiopeia A. And it’s revealed the location of the elements left behind in the star’s r

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Ancient worlds could be kept ‘alive’ by gravitational nudges

For more than three billion years now, Earth’s ability to support life has been a delicate balancing act. Climatic periods of severe cold or hot have brought life to its knees. Glaciers covered the planet in the “snowball Earth” epoch, which ended some 650 million years ago. During the extremeheat of the early Triassic period around 250 million years ago, tropical sea temperatures exceeded 100 degrees Fahrenheit.

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Ancient worlds could be kept 'alive' by gravitational nudges

For more than three billion years now, Earth’s ability to support life has been a delicate balancing act. Climatic periods of severe cold or hot have brought life to its knees. Glaciers covered the planet in the “snowball Earth” epoch, which ended some 650 million years ago. During the extremeheat of the early Triassic period around 250 million years ago, tropical sea temperatures exceeded 100 degrees Fahrenheit.