Ancient Supernova Explosion At The Center Of Our Galaxy Created Enough Dust To Make 7,000 Earths
Previous research held that supernovas–explosions of stars in their death throes–spewed out massive amounts of dust into the early universe. However, astronomers didn’t know if that dust was able to withstand shockwaves from the explosion to serve as fodder for planets and stars to form.
Now, for the first time, an international team of astronomers has directly observed a cloud of cosmic dust that did survive in the turbulent environment of a supernova remnant, providing support for the theory that supernovas produced the vast amount of cosmic dust in the early universe.
“Our observations reveal a particular cloud produced by a supernova explosion 10,000 years ago contains enough dust to make 7,000 Earths,” lead researcher Dr. Ryan Lau, a postdoctoral associate for astronomy at Cornell, said in a written statement.
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Peering into the center of the Milky Way galaxy, in this false color image, contour lines reveal the dusty area of Sagittarius A East – an ancient supernova remnant.
Lau and his colleagues found the elusive dust using NASA’s airborne Stratospheric Observatory for Infrared Astronomy, which consists of a reflecting telescope aboard a modified Boeing 747 jumbo jet.
“We were on a flying observatory traveling at 600 mph (965 km/h) at an altitude of 45,000 feet (13,715 meters) to take images of a … supernova remnant located 27,000 light-years away from us at the center of our galaxy,” Lau told Space.com. “One of the most surprising things is that we were not expecting to see this at all.”
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