The Hubble Space Telescope captured images of the ill-fated star that died five times, spanning the years from 1990 to 2016 when it was observed from Earth.
As we all know, the universe is changing very rapidly and constantly expanding day by day. This leads us to encounter strange cases, such as observing the death of the same star several times.
The typical unfortunate star is a supernova, called Refsdal.
The Refsdal supernova ‘died’ 5 times when observed by the Hubble Space Telescope
The Refsdal supernova “died” five times when observed by the Hubble Space Telescope. (Picture: Science).
In 2014, observers detected the image of a passing supernova for the first time. However, what surprised them was that this same star, emitted bright light at five different times, including: once in the late 90s, twice in late 2014, once in late of 2015, once in early 2016.
Interestingly, each time the star shines, it explodes into ashes and cannot be restored forever. In other words, we have observed the death of the same unfortunate star 5 times.
Why is there such nonsense?
According to the explanation, magnetic light radiates from all directions. But as light traveled through space, it was distorted by the enormous gravitational field of a cluster of giant galaxies.
This makes Light from the supernova reaches Earth through various routes. otherwise, Each appearance of a supernova has reached us in a different way in the universe.
Imagine 5 trains departing from the same station, but taking different routes. Then, according to a strange arrangement of the universe, they arrive at the same station, but at different places and at different times.
According to scientists, by observing the appearance of supernovae on Earth, one can measure the time it takes for them to move, thus calculating the expansion of the universe during the process of moving the light ray – called Hubble constant.
Additionally, there are a number of other methods to measure the Hubble constant, such as those based on the cosmic microwave background, which includes the residual light or radiation that is transmitted through the universe immediately afterwards.
Post source: Dan Tri
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The Hubble Space Telescope has captured images of a dead star five times, from 1990 to 2016, observed from Earth. Like them…
