Zircon encrusted

Geologists have identified Zircon in ancient sandstones in Australia; Zircons are very hard to destroy or alter and when found in ancient rock formations undisturbed, they can be very good clocks indicating their own date of formation – thus indicating the oldest found material on earth. Could support the idea that a terrestrial crust formed 100 million years after a large body slammed into the earth; re-melting the planet and forming the moon. How will events in Ukraine affect U.S. / Russian space relations? Two Russians and an American currently share duties aboard International Space Station. Proposed NASA budget for 2015 – funds ISS operations until at least 2024. Dennis Tito has launched an effort to fly by Mars with a two-person crew in 2018.