Eddie Gonzales Jr. – MessageToEagle.com – A violent collision of two neutron stars 4.6 billion years ago has been identified by astrophysicists Szabolcs Márka at Columbia University and Imre Bartos (GSAS’12) at the University of Florida.
This single cosmic event, close to our solar system, gave birth to 0.3 percent of the Earth’s heaviest elements, including gold, platinum and uranium.
“This means that in each of us we would find an eyelash worth of these elements, mostly in the form of iodine, which is essential to life,” Bartos said in a press release.
“A wedding ring, which expresses a deep human connection, is also a connection to our cosmic past predating humanity and the formation of Earth itself, with about 10 milligrams of it likely having formed 4.6 billion years ago.”
Meteorites forged in the early solar system carry the traces of radioactive isotopes. As these isotopes decay, they act as “clocks” that can be used to reconstruct the time they were created, Márka said.
Astrophysicists compared the composition of meteorites to numerical simulations of the Milky Way.
They found that a single neutron-star collision could have occurred about 100 million years before the formation of Earth, in our own neighborhood, about 1,000 light years from the gas cloud that eventually formed the Solar System.
The Milky Way galaxy itself is 100,000 light years in diameter, or 100 times the distance of this cosmic event from the cradle of Earth.
“If a comparable event happened today at a similar distance from the solar system, the ensuing radiation could outshine the entire night sky,” Márka said.
“Our results address a fundamental quest of humanity: Where did we come from and where are we going?” Márka said.
“It is very difficult to describe the tremendous emotions we felt when we realized what we had found and what it means for the future as we search for an explanation of our place in the universe.”
Written by Eddie Gonzales Jr. – MessageToEagle.com Staff Writer