Supernovas may have triggered ancient ice ages, wiping out 60–70% of Earth's species: Study
A new study, based on a census of stars in the Milky Way, indicates that these ice ages might have been triggered by nearby ...
Science Daily7 天
Violent supernovae 'triggered at least two Earth extinctions'
At least two mass extinction events in Earth's history were likely caused by the 'devastating' effects of nearby supernova explosions, a new study suggests. Researchers say these super-powerful blasts ...
Earth.com13 天
Two of Earth's mass extinctions were caused by something much worse than asteroids
The rate of stars going supernova near Earth appears to match two mass extinctions -- 372 million years ago and 445 million ...
Knowridge Science Report11 天
Did supernovae cause mass extinctions on Earth? Scientists say yes
New research suggests that powerful star explosions, called supernovae, may have caused at least two mass extinctions in ...
kcra.com5 天
Supernovas may have had a role in two of Earth’s largest mass extinctions, study suggests
A cataclysmic shift at the end of the Ordovician led to the disappearance of about 85% of species at a time when life was mostly limited to the seas.“Their link to those mass extinctions ...