One of the widest accepted models for the Moon’s formation states that a renegade, Mars-sized planet, named Theia, slammed into Earth 4.5 billion years ago, and pushed up debris that would eventually coalesce into a satellite. This theory has been able to predict and explain many facts, like the mass of Earth and the Moon, but it also says that most of the lunar-forming debris stemmed from Theia, not proto-Earth. Theia is thought to have originated from a different part of the Solar System, with different elemental isotopes, which conflicts with some of the more sensitive measurements of the past decade showing that rocks from Earth and the Moon have identical isotopic ratios of oxygen, titanium, chromium, and tungsten.
It has been demonstrated experimentally that a diamond’s trip from deep below the Earth’s surface must be very quick, since lab tests have shown that the gems would burn up in a matter of days, if not hours, if left in the harsh conditions found in the inner crust. The eruptions of diamonds are driven by massive quantities of carbon dioxide fizzing up from the molten rock that surrounds the gems.
Yves Rossy, the flying Swiss maniac, has appropriately called himself Jetman, and I have to say that his moniker is well deserved, because that thing strapped to his back just looks plain dangerous. His latest stunt? Flying in formation with a pair of L-39C fighter jets.