News
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SpaceThese are the most detailed images of the sun ever taken
First images from the Daniel K. Inouye Solar Telescope reveal details on the surface of the sun three times as small as ever seen.
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Health & MedicineYour most pressing questions about the new coronavirus, answered
As the new coronavirus outbreak unfolds, we are updating this FAQ with the latest on the race to understand the virus and stop the growing global health crisis. Our most recent update was posted February 18.
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EarthTiny meteorites suggest ancient Earth had a carbon dioxide–rich atmosphere
Simulations of reactions between 2.7-billion-year-old micrometeorites and atmospheric gases hint Archean Earth’s atmosphere had high levels of CO2.