Behind the Sun, the comet appears to show signs of acceleration beyond what is expected by gravity. And for reasons not yet clear, it appears to have changed color.
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By SDTodayBehind the Sun, the comet appears to show signs of acceleration beyond what is expected by gravity. And for reasons not yet clear, it appears to have changed color.
The high salt concentration in the Dead Sea drives the warming and shrinking of the lake, and something…
BySDTodayWe now have a clearer picture of what happened in the decades following the asteroid impact that led…
BySDTodayThe geographic poles can shift at surprisingly high rates Planet Observer/Universal Images Group via Getty Images The Earth’s…
BySDTodayExpedition member Chris Blakeley in the entrance to the world’s northernmost known cave, found on the Wulff Land…
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