One of the favorite topics of our news is about moon landing. So, on this day (on September 20, 1970) the Soviet Union's Luna 16 moon probe landed on the moon.
During the studies of the meteorite NWA 1934 researchers discovered the oldest mineral of Solar System, called Krotite, CaAl2O4. The mineral was named in honor Alexander Krot. According to researchers mineral formed at very high temperature and low pressure during the cooling of molten material in the protoplanetary disk that surrounded the Sun.Age of the meteorite, which was discovered Krotite, CaAl2O4l, is more than four and a half billion years and the mineral is even older, which makes it the oldest known minerals in our Solar System.
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