like tributary steams, flow into the main glacier in their own shallow 'U' shaped valleys. A hanging valley forms where the main glacier cuts off a tributary glacier and creates a cliff.
The surface of the moon is secured with dead volcanoes, sway holes, and magma streams, some noticeable to the independent stargazer. Early researchers figured the dull stretches of the moon may be seas, thus named such highlights horse, which is Latin for "oceans"
According to the big Splash theory, the Moon framed out of the trash left over from a crash among Earth and a galactic body the size of Mars, roughly 4.5 billion years prior, in the Hadean age; around 20 to 100 million years after the Solar system blended.
