Astronomers detect stars emerging signal, dark matter in the early universe some 14 billion years ago and they may also detect mysterious dark matter at work.
They have used a radio antenna not much bigger than a refrigerator. Astronomers discovered that primordial suns began to shine about 180 million years after the Big Bang, when the universe was created.
Astronomer Judd Broman of Arizona State University said, by finding this minuscule signal has opened a new window on the early universe. Telescopes cannot see far enough to directly see such ancient stars, but the stars can be detected by the faint radio waves they emitted, he added.
Researchers chose a remote spot to reduce unwanted radio waves from our noisy Earth and across the galaxy, in the Western Australian desert to set up equipment to detect those.
It had been used in the Australian desert to set up equipment to detect faint signals from the early universe.
Peter Kurczynski, a National Science Foundation program officer says, it is basically very difficult to detect those faint signals. These researchers with a small radio antenna in the desert have seen farther than the most powerful space telescopes, opening a new window on the early universe, he added.
The signal also showed unexpectedly cold temperatures and an unusually pronounced wave. Astronomers said the best explanation was likely difficult to find, so called dark matter. It is a substantial part of the universe for which scientists have been searching for decades.
If it is confirmed, this discovery deserves two Nobel Prizes one for capturing the signal of the first stars and second for potential dark matter confirmation, said Harvard University astronomer Avi Loeb, but he wasn’t part of the research team.