According to experts from the Galaxy And Mass Assembly (GAMA), which conducted the largest joint survey in multiple wavelengths ever conducted says that our universe is slowly and inexorably dying. “The universe is shutting down, it is cooling, slowly but surely.”
This is the conclusion of a team of astronomers that examined more than 200,000 galaxies and presented the results to the General Assembly of the International Astronomical Union.
But this is something we have known for nearly 100 years now, said Sean Carroll – astrophysicist at the California Institute of Technology, who authored two books on theoretical physics. “We have known that since the 1920s” said Carroll.
Today, the energy of the stars represents half of the energy emitted 2 billion years ago, a trend that seems to be inevitable and definitive.
Astronomers have come to this conclusion after measuring energy generated within a vast area of space, recording emissions of each galaxy in 21 wavelengths with a precision never before achieved. This is the most comprehensive study of the energy output of the universe ever taken.
“While most of the energy sloshing around was created in the aftermath of the Big Bang, additional energy is constantly being released by stars as they fuse elements like hydrogen and helium together,” Professor Driver says.
“This newly released energy is either absorbed by dust as it travels through the host galaxy, or escapes into intergalactic space and travels until it hits something such as another star, planet, or very occasionally a telescope mirror.”
The energy reduction in the universe was observed in all wavelengths, from ultraviolet to far infrared.
For this research, experts employed the most powerful telescopes in the world.
“We used as many space and ground-based telescopes we could get our hands on, to measure the energy output of over 200,000 galaxies across as broad a wavelength range as possible,” says ICRAR Professor Simon Driver, who presented the findings at the International Astronomical Union’s General Assembly in Honolulu.
GAMA wants to elaborate a map of the energy generated in a large volume of space, both in the preset as the past, since the “Big Bang.”
“The Universe is fated to decline from here on in, like an old age that lasts forever. The Universe has basically plonked itself down on the sofa, pulled up a blanket and is about to nod off for an eternal doze,” Professor Driver says.