Did exploding stars help life on Earth to thrive?

New research by a Danish physicist suggests that life might have been influenced by supernovae near the Solar System. When massive stars reach the end of their life, they explode as supernovae, which can be brighter than an entire galaxy of normal stars. The remnants of these events release vast numbers of high-energy charged particles known as galactic cosmic rays (GCR). If a supernova is close enough to our Solar System, the enhanced GCR levels can have direct impacts on the atmosphere of Earth. Professor Henrik Svensmark of the Technical University of Denmark (DTU) looked through 500 million years of geological and astronomical data and considered the proximity of the Sun to supernovae as it moves around in the Milky Way. As the Sun travels around the galaxy, it encounters newly forming clusters of stars, which are called open clusters. These stars have a range of ages and sizes, and started with a small proportion of stars massive enough to explode as supernovae. Svensmark was able to determine how the ra

Did exploding stars help life on Earth to thrive?

(Phys.org) -- Research by a Danish physicist suggests that the explosion of massive stars – supernovae – near the Solar System has strongly influenced the development of life. Prof. ...

Tue 24 Apr 12 from Phys.org

Did Exploding Stars Help Life On Earth To Thrive?, Wed 25 Apr 12 from SpaceDaily

Did exploding stars help life on Earth to thrive?, Tue 24 Apr 12 from ScienceDaily

Did exploding stars help life on Earth to thrive?, Tue 24 Apr 12 from AlphaGalileo

Rays of life? New study shows that life on Earth blossomed when nearby supernovas bathed our planet in cosmic radiation

When supernovae explode, life has prospered. 'The evolution of life mirrors the evolution of the Galaxy,' says Prof Henrik Svensmark of the Technical University of Denmark

Wed 25 Apr 12 from Daily Mail

Svensmark's Cosmic Jackpot: "Evidence of nearby supernovae affecting life on Earth"

Nigel Calder asks us to republish this post for maximum exposure. He writes: Today the Royal Astronomical Society in London publishes (online) Henrik Svensmark's latest paper entitled "Evidence ...

Tue 24 Apr 12 from Watts Up With That?

Supernovae Could Have Had Impact On Life On Earth

New research by a Danish physicist suggests that life might have been influenced by supernovae near the Solar System. When massive stars reach the end of their life, they explode as supernovae, ...

Tue 24 Apr 12 from RedOrbit

  • Pages: 1

Bookmark

Bookmark and Share