Interesting Facts About Mercury
nasa.gov is out with a fascinating report about the internal structure of Mercury and a bunch of other very interesting facts.
A graphical representation of Mercury’s internal structure. Credit: NASA’s Goddard Space Flight Center How do you explore the interior of a planet without ever touching down on it? Start by watching the way the planet spins, then measure how your spacecraft orbits it — very, very carefully. This is […]
Click here to view original web page at solarsystem.nasa.gov