Cosmic explosions of energy in the Universe left their mark on the biology and geology of the Earth

Supernova explosions leave their mark on our planet

Geologists' studies of massive energy explosions in space made surprising conclusions. It turns out that the events taking place in the Universe left their mark on the Earth. Cosmic explosions of energy changed the biology and geology of our planet. A geologist Robert Brackenridge of the University of Colorado is studying supernova explosions. They are considered the most violent events in space.

Over the course of several months of such explosions, a huge amount of energy is released. It is comparable to the energy of the Sun that it gives over its entire life period. According to the geologist, the astronomers constantly observe supernovae in other Galaxies.

If at least one of them was located in close proximity to the Earth, the explosion could destroy human civilization, enveloping the planet in dangerous radiation and destroying its protective ozone layer. To study these phenomena, the geologists used data from annual tree rings, which retain information about the taking place events.

It turned out that supernovae caused climate disturbances on the Earth at least four times over the past 40 thousand years. The research results have not been made yet, but they are close to the fact that stability on the Earth depends on the events taking place in the Universe.

Extreme events have potential consequences for the Earth, and this is reflected in the annual tree rings. This is proved by the well-known isotope carbon-14, which is extremely rare on the Earth and in minimal volumes. It can only form when cosmic rays constantly attack the Earth's atmosphere.

The resulting carbon is captured by trees, marking its unstable volumes in annual rings from year to year. The scientists believe that the ongoing bursts could be caused by solar flares or huge bursts of energy from the Sun's surface.

Reference: “Solar system exposure to supernova γ radiation” by G. Robert Brakenridge, 4 November 2020, International Journal of Astrobiology. DOI: 10.1017/S1473550420000348