that they didn't really exist," lead author Hans Niel told NGN. "It's sort of like you take a time exposure on a highway, and then all the tail lights of the cars make long streaks in the image."
The mountainous region on the far side of the moon, known as the lunar farside highlands, may be the solid remains of a collision with a smaller companion moon, according to a new study by planetary scientists at the University of California, Santa Cruz. The striking differences between the ...