geodesy
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New NASA Satellite Will Keep Tabs on Nearly All of Earth’s Water
We live on a blue planet. More than 70% of Earth’s surface is covered by water, and a soon-to-launch satellite is set to shed light on all that liquid like never before. The Surface Water and Ocean Topography (SWOT) mission is a joint project between NASA and France’s Centre National d’Études Spatiales (CNES), plus other…
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Planet Mercury Has Solid Inner Core About The Same Size As Earth’s
A new analysis has found that Mercury has a solid inner core, just like Earth does. And Mercury’s core is just about the same size as our own planet’s.