MESSENGER, the Largest Spacecraft on Mercury, Observes the Planet’s Core and Exosphere
Scientists want to better understand how Mercury formed and evolved during its 4.5 billion-year existence, so they are studying both its interior and exterior features. Without major rocket advancements like solar sails or solar electric propulsion, reaching Mercury was unlikely. But researchers found a way to use its gravity as an aid. Mercury’s Surface Mercury’s […]
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