Waspie_Dwarf Posted January 18, 2018 #1 Share Posted January 18, 2018 NASA Team Studies Middle-aged Sun by Tracking Motion of Mercury Quote Like the waistband of a couch potato in midlife, the orbits of planets in our solar system are expanding. It happens because the Sun’s gravitational grip gradually weakens as our star ages and loses mass. Now, a team of NASA and MIT scientists has indirectly measured this mass loss and other solar parameters by looking at changes in Mercury’s orbit The new values improve upon earlier predictions by reducing the amount of uncertainty. That’s especially important for the rate of solar mass loss, because it’s related to the stability of G, the gravitational constant. Although G is considered a fixed number, whether it’s really constant is still a fundamental question in physics. Read More: NASA Link to comment Share on other sites More sharing options...
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