Scientists from Keele University have found strong evidence that some of Earth’s past mass extinctions could have been caused by nearby supernova explosions—massive star explosions in the Milky Way.
https://doi.org/10.1086/322151 • https://www.jstor.org/stable/10.1086/322151 ABSTRACT We present single‐epoch spectropolarimetry of the Type II supernovae (SNe II ...
Specifically, the findings support the hypothesis that supernovae could have triggered two of the so-called "big five" mass ...
"Over time, the supernova-enriched gas is incorporated into new generations of stars, continuing the life cycle of gas and stars in galaxies across the universe." NGC 2283 is home to a Type II ...
Astronomy on MSN5d
Will Sirius B explode as a type Ia supernova?A type Ia supernova occurs when a white dwarf draws hydrogen from a companion. But Sirius A and B are too widely separated ...
The work is published in the journal Physical Review Letters. A type Ia supernova occurs in a binary system in which one of the stars is a white dwarf. The primary mechanism behind this is ...
ABSTRACT A comparative study of near–maximum‐light optical spectra of 24 Type Ia supernovae (SNe Ia ... high‐velocity Ca ii absorption in SN 2001el. Seven SNe Ia are assigned to a “broad‐line” group, ...
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