Cyclone watch issued as Oma approaches southeast coast
Prepare to witness the biggest & brightest Super Snowmoon tonight !!
South East Queensland braces for wild weather with approach of Cyclone Oma
Super Snow Moon on display through Tuesday morning
Get ready: Year's brightest supermoon nearly here
Earth's Oldest Rock Was Actually Found On The Moon
27 January 2019, 08:29 | Dale Webster
The final impact event to affect this sample occurred about 26 million years ago, when an impacting asteroid hit the Moon, producing the small 340 meter-diameter Cone Crater, and excavating the sample back onto the lunar surface where astronauts collected it nearly exactly 48 years ago (January 31-February 6, 1971).
Although extremely rare, asteroid strikes hold the potential to pulverise the planet. The rock was discovered by scientists decades ago thanks to the Apollo 14 crew.
Chemical analysis of the fragment showed it crystallized in an environment that could be found on ancient Earth but not on the moon, said the team led by Jeremy Bellucci and Alexander Nemchin at the Swedish Museum of Natural History and Curtin University in Australia. This same impact created the Cone Crater that astronauts Alan Shepard and Edgar Mitchell explored and sampled during their moon mission almost half a decade ago.
The fragment endured further trauma on the moon's surface. He holds a B.A.in Psychology from the University of Toronto, and a Master of Science in Public Health (M.S.P.H.) from the School of Public Health, Department of Health Administration, at the University of North Carolina at Chapel Hill.
"It is possible that some of these unusual conditions could have occurred very locally and very briefly on the moon and the sample is a result of this brief deviation from normality", Professor Nemchin said. The Earth itself is around 4.5 billion years old, and the oldest rocks we've ever found are a little over half that age.
The Moon was much closer to the Earth than it is today when the rock fragment was produced and ejected from the Earth.
The findings appeared in the journal Earth and Planetary Science Letters. Impacts of this magnitude were capable of pulling out materials from deep within the Earth's surface. The simpler explanation, the researchers said, is that it came from Earth. That rock is the oldest known rock to originate from the Earth, dating back to approximately four billion years. According to one widely accepted theory, the moon - and possibly the elemental foundations that make life possible on Earth - was formed when a large planet collided with ours, sending fragments and planet bits soaring into space. Then, a massive collision between Earth and a comet or asteroid threw the rock to the Moon. It was then excavated by one or more large impact events and launched into lunar space.
Since zircon contains uranium, whose half-life is predictable, the researchers were able to date the rock to about 4 to 4.1 billion years ago.
Kring suspects the conclusion of a terrestrial origin for the rock fragment will be controversial.
Yellow warning for snow issued in Sussex
Monday night will be "very cold and wintry, with occasional hail, sleet and snow showers", according to Met Éireann. Galway can expect sustained winds of 55 to 65 km/hr with the gusts reaching 90 to 110 km/hr.
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He said last season that he planned to pare down his playing schedule this year in an effort to be sharper for more events. Rahm holds a one-shot lead over Doug Ghim and world No.1 Justin Rose , who each posted 63 on the North course.
Greek parliament ratifies 'historic' Macedonia name change
The agreement has also caused protests in Macedonia , with critics there saying the government gave up too much in the deal. Scores of demonstrators who braved the weather conditions outside parliament chanted "traitors" as lawmakers voted inside.