Interstellar Iron >>

EPISODE #178

AIRED: 08-02-2019

Fe. Iron. Inter. Steller. Iron. It has a ring to it…right? Like a bell!! Hit it, Josh!
(We shall just let THIS first story speak for itself…YOU decide if it RINGS true):

Scientists in Germany have found traces of a very rare isotope of iron within freshly fallen Antarctic snow and say that the radioactive material must have (DING!) arrived on Earth in the form of interstellar dust. The finding backs up previous research revealing that iron-60 was generated by supernovae within the last few million years. But unlike those earlier observations, the iron-60, in this case, has only just arrived – having reached our planet no more than 20 years ago. (DING!) In the mid-1990s, John Ellis, Brian Fields, and David Schramm proposed that small quantities of iron-60 and other radioisotopes ought to be (DING!) present in geological formations on Earth after being forged by exploding stars.
They reasoned that some of the radioactive isotope should be (DING!) contained in dust particles within the Local Interstellar Cloud, a region of relatively dense interstellar space through which the Solar System is currently traveling at some 26 km/s. Any of those particles lying along Earth’s path should (DING!) rain down on our planet’s surface as it speeds forward. Korschinek says the find is important because it provides strong evidence that at least some of the Local Interstellar Cloud must have (DING!) been generated by supernovae.
According to Jeffrey Linsky at JILA in Boulder, Colorado, the local cloud may have (DIING!) formed after a supernova shock wave compressed and ionized the gas in the interstellar medium. As such, he says, iron-60 atoms could be (DING!) concentrated at the edge of the cloud. He adds that any future change in the rate of deposition of iron-60 in the Antarctic might (DING!) indicate that the Earth is crossing this boundary. “The timescale for the Sun leaving the local cloud is less than about 3000 years,” he says, “but it could be (DING!) only a few years” (DING! DING! DING! DING! DING!)

–NASA discovers 3 new planets, wants your help to find more…Josh thinks a bit differently on this idea. #JoshRant
–Explore Space…well sorta…kinda…in a way…

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