Earth was hit by a massive burst of energy. It came from outside Solar System

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Last Updated17/11/2023

A groundbreaking event occurred when lightning detectors in India picked up a major burst of energy that slammed into Earth.
This massive burst is now believed to be of extraterrestrial origin and had its origin outside of our Solar System.
Earth's ionosphere experienced a significant disturbance due to an intense gamma-ray burst (GRB) from a distant exploding star.
This cosmic occurrence is named GRB 221009A.
The burst hailed from a galaxy nearly two billion light-years away, making it one of the most powerful GRBs ever recorded.

This discovery is significant as it demonstrates that cosmic events occurring billions of light-years away can still have tangible effects on Earth.
The disturbance impacted the lowest layers of Earth's ionosphere, similar to the effects of a major solar flare.
The increase in ionization in the bottom-side ionosphere affected very low frequency radio signals, causing them to bounce differently along the ionosphere.
The implications of such a GRB occurring within our own galaxy could be dire, potentially damaging the ozone layer and allowing harmful ultraviolet radiation to reach Earth's surface.
This scenario has been speculated as a possible cause for past mass extinction events on Earth.

Gamma-ray bursts (GRBs) are the most powerful and violent explosions in the known universe.
These brief flashes of high-energy light result from some of the universe's most explosive events, including the birth of black holes and collisions between neutron stars.
Lasting a few milliseconds to several minutes, GRBs can be hundreds of times brighter than an average supernova, making them as luminous as a million trillion suns.
Thus, when a GRB erupts, it briefly becomes the brightest source of electromagnetic radiation in the observable universe.
The first observation of a GRB came in 1967, through the Vela 4A satellite, part of a series of X-ray, gamma-ray, and neutron-detecting spacecraft designed to monitor any nuclear testing by the Soviet Union or other nations.

The cause of a gamma-ray burst depends on how long it lasts.
GRBs that last less than two seconds are caused by the merger of two neutron stars or the merger of a neutron star and a black hole.
Longer GRBs, which can last hours, are triggered when a massive star collapses and births a black hole.

In just a few seconds, a gamma-ray burst can emit as much energy as the sun will put out over its entire 9 billion-year lifetime.