Simon Clark on MSN
How Timing a Sunset Can Measure the Border of the Atmosphere
By precisely timing how long the Sun takes to vanish below the horizon, scientists can estimate the thickness of Earth’s ...
PM local time, a light magnitude 3.0 earthquake struck approximately 13.7 kilometers (9 miles) west of Greater Sudbury, Ontario, Canada. This seismic event, characterized by a shallow depth of 9.8 ...
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