Supernovae explosion may have caused mass extinction on Earth 359 million years ago

Researchers at  University of Illiis Urbana-Champaign have discovered that a mass of exploding stars or 'supervae' 65 light-years from Earth might have caused mass extinction event almost 359 million years ago. In a new study published in Journal Proceedings of National Acemy of Sciences of United States, led by astrophysicist Brian Fields, scientists found that Late Devonian extinction, one of major five in history of Earth’s existence, might have been caused by an explosion from distant stars. study found that it was superva that “coincided with a dramatic drop in stratospheric ozone, possibly due to a global temperature rise” that might have led to final extinction event.

Superva explosion could inflict dam by accelerating cosmic rays that can deliver ionizing riation for up to ∼100 ky, scientists proposed in research.

We, refore, propose that end-Devonian extinctions were triggered by superva explosions at ∼20pc, somewhat beyond 'kill distance' that would have precipitated a full mass extinction, y ded.

According to research, supervae likely due to core collapses of massive stars are concentrated in thin Galactic disk where Sun resides. refore, scientists said that episode mass dying previously accounted for asteroid impacts, climate change, sea-level changes, and large-scale volcanic activity was actually a result of catastrophic supervae explosions on solar system. 

[This Chandra X-ray photograph shows Cassiopeia A (Cas A, for short), youngest superva remnant in Milky Way. Im: © NASA/CXC/MIT/UMass Amherst/M.D.St et al.]

[ In this illustration, a white dwarf pulls matter from a companion star. Eventually, this will cause white dwarf and star to explode. Im credit: STScI/NASA]

[Gamma Ray burst from Superva. Credit: NASA/DOE/Fermi LAT Collaboration, CXC/SAO/JPL-Caltech/Steward/O. Krause et al., and NRAO/AUI.]

Author and astromer Brian Fields of University of Illiis at Urbana-Champaign said, “We propose that one or more superva explosions, about 65 light-years away from Earth, could have been responsible for protracted loss of ozone.” He ded, “Earth-based catastrophes such as large-scale volcanism and global warming can destroy ozone layer too, but evidence for those is inconclusive for time interval in question.” Furr, researchers ruled out Ozone depletion due to any or event. In study, y explained that Astrophysical mechanisms for biosphere dam include “bolide impacts, solar proton events, superva (SN) explosions, gamma-ray bursts, and neutron star mergers (kilovae). Bolide impacts, gamma-ray bursts, and solar proton events are essentially impulsive, caused by superva explosions.”

Re: NASA Finishes Testing n-toxic craft Fuel, Green Propellant Mission Nears Completion

Re: NASA Releases Satellite Imry Of 1200+ Mile Smoke Trail From California Wildfires

Superva explosion h a more “lasting impact”

“se events end quickly and are unlikely to cause long-lasting ozone depletion that happened at end of Devonian period,” paper author and astromer Jesse Miller at University of Illiis said in research. Furr, he stressed that superva explosion h a more “lasting impact” on Ozone depletion. Researchers predicted that if exploding star h turned to a va, causing damaging ultraviolet, X-ray, and gamma-ray riation, Earth's ozone layer would have likely lasted up to some 100,000 years. “This is entirely possible. Massive stars usually occur in clusters with or massive stars, and or supervae are likely to occur soon after first explosion,” Miller confirmed. 

Re: NASA: 'Expedition 63' crew Members To Inspect Cabin Air Leak Onboard ISS

Re: NASA Astronaut Snaps Breathtaking Pictures Of Hurricane Genevieve From ISS, See Here

(Im Credit: Unsplash/@joelfilip)