Discover the oldest galaxy in the universe

The US Aerospace Agency's Hubble Telescope set a new record when finding GN-z11, the most distant galaxy located 13.4 billion light-years from Earth.

According to the International Business Times, because the light emitted from galaxies takes billions of years to reach Hubble, this giant telescope is "looking back" to the beginning of the universe.

"We have taken a big step back in time, beyond what we expected in Hubble. We can observe GN-z11 when the universe is only 3% of today's age," said the researcher. rescue Pascal Oesch at Yale University, USA, said. The findings were published yesterday in the journal Astrophysics.

The galaxy GN-z11 is 13.4 billion light-years away from Earth.(Photo: NASA).

The most distant galaxy record changed many times in the past year. Keck Observatory in Hawaii, USA, found the EGS-zs8-1 galaxy 13.1 billion light-years from Earth. The EGS-zs8-1 holds the oldest galaxy in the universe until researchers at the California Institute of Technology (Caltech) can observe the EGS8p7 galaxy at a distance of 13.2 billion light-years. With the new discovery, GN-z11 officially holds the record as the most distant and oldest galaxy in the universe.

The researchers used Hubble's Wide Field Camera 3 wide-range camera to determine the distance of GN-z11.

Measuring changes in the wavelength of the red spectrum according to the expansion of the universe can help scientists find a star or galaxy far away from Earth.

After identifying the distance, astronomers used NASA's Spitzer space telescope data to delve into the ancient galaxy. GN-z11 is 25 times smaller than the Milky Way, but undergoes 20 times faster star formation.

"It is interesting to know that such a large galaxy was present only after the first stars formed 200-300 million years," said researcher Garth Illingworth of the University of California, Santa Cruz.

The distance of GN-z11 is said to be close to the edge of Hubble's field of observation. Galaxies of the same age or older will certainly be discovered by the successor version, the James Webb space telescope."The new study shows the Webb telescope will certainly find many galaxies from the youngest to the oldest , " Illingworth said.