In case you needed something else to worry about.
Tag: meteorite
Remnants of our early solar system
❝ Scientists believe the solar system was formed some 4.6 billion years ago when a cloud of gas and dust collapsed under gravity possibly triggered by a cataclysmic explosion from a nearby massive star or supernova. As this cloud collapsed, it formed a spinning disk with the sun in the center.
❝ Since then scientists have been able to establish the formation of the solar system piece by piece. Now, new research has enabled scientists from The University of New Mexico, Arizona State University and NASA’s Johnson Space Center to add another piece to that puzzle with the discovery of the oldest-ever dated igneous meteorite…
❝ “The age of this meteorite is the oldest, igneous meteorite ever recorded,” said Professor and Director of the UNM Institute of Meteoritics Carl Agee. “Not only is this just an extremely unusual rock type, it’s telling us that not all asteroids look the same. Some of them look almost like the crust of the Earth because they’re so light colored and full of SiO2. These not only exist, but it occurred during one of the very first volcanic events to take place in the solar system.”
Take the time to learn a bit more about the formation of the system where we live, folks.
Meteorite lands on cricket pitch during match
When two spectators standing on the boundary at a cricket match saw an object hurtling down from the sky, their first instinct might have been to applaud.
However Jan Marszel, 51, and Richard Haynes, 52, were not witnessing a six, but an extremely rare meteor strike.
The rock, a few inches long and believed to be up to 4.5 billion years old, broke in two when it hit the ground in front of them close to the pitch.
The pair – both Sussex members – were sitting square of the wicket watching the England player Luke Wright bat with Monty Panesar when they spotted the black, five-inch rock hurtling towards them.
Mr Marszel, an IT consultant, said: “We were sitting at the boundary edge when all of a sudden, out of a blue sky, we saw this small dark object hurtling towards us. “It landed five yards inside the boundary and split into two pieces.
“One piece bounced up and hit me in the chest and the other ended up against the boundary board. It came across at quite a speed – if it had hit me full on it could have been very interesting…”
Retired Mr Haynes, said: “We were quietly supping our pints, both looked up at the same time and saw a black object coming towards us – we didn’t know what it was.
“If it had come from the other direction we might have suspected someone had thrown it, but we saw it come in straight over the ground from quite a way out – it was definitely a meteorite.”
I hope no one spilled their beer.
Researchers using new camera network find rare meteorite
Researchers have discovered an unusual kind of meteorite in the Western Australian desert and have uncovered where in the Solar System it came from, in a very rare finding published today in the journal Science.
Meteorites are the only surviving physical record of the formation of our Solar System and by analysing them researchers can glean valuable information about the conditions that existed when the early Solar System was being formed. However, information about where individual meteorites originated, and how they were moving around the Solar System prior to falling to Earth, is available for only a dozen of around 1100 documented meteorite falls over the past two hundred years.
Dr Phil Bland, the lead author of today’s study from the Department of Earth Science and Engineering at Imperial College London, said: “We are incredibly excited about our new finding. Meteorites are the most analysed rocks on Earth but it’s really rare for us to be able to tell where they came from. Trying to interpret what happened in the early Solar System without knowing where meteorites are from is like trying to interpret the geology of Britain from random rocks dumped in your back yard.”
The new meteorite, which is about the size of cricket ball, is the first to be retrieved since researchers…set up a trial network of cameras in the Nullarbor Desert in Western Australia in 2006.
The researchers aim to use these cameras to find new meteorites, and work out where in the Solar System they came from, by tracking the fireballs that they form in the sky. The new meteorite was found on the first day of searching using the new network, by the first search expedition, within 100m of the predicted site of the fall. This is the first time a meteorite fall has been predicted using only the data from dedicated instruments.
RTFA for the details. Not only about the process of determining the origin of the meteorite – but how they utilized this new camera network. Interesting tale.
Eideard 