Astronomers from Sierra Negre (Mexico), where the largest radio telescope is located, discovered one of the first galaxies in the history of our world. More precisely, an object in a very distant space that fits this description. Instruments recorded a signal from the accumulation of dust and gas, which went to Earth 12.7 billion years.
According to the current theory, the Big Bang occurred 13.7 billion years ago. In the first 400 million years of its existence, the universe was so hot and homogeneous, that there was nothing in it, a conditional uniform mass. Then, in the period 500-1000 million years after the explosion, it began to cool down and the first “lumps” appeared in the emptiness of space, the oldest stars and galaxies. A recently found object has a similar age.
For the first time, the “old lady” saw the space telescope Herschel Space Telescope back in 2013, but in the form of an illegible spot. The data was sent to other observatories, and, finally, Mexican scientists with the help of the Large Millimeter Telescope were able to calculate the redshift index. This is how light from the object has shifted to the red side of the spectrum, which allows us to calculate how long ago this galaxy appeared – 12.7 billion years ago.
Mankind today knows the approximate coordinates of dozens of such cosmic “old-timers,” whose light can not get through to us directly because of the abundance of obstacles on the way and the colossal distance. And now, as the radio telescopes improve, we will gradually start to find them truly and measure the real age of the oldest galaxies in the universe .