Lonely stars

American astronomers believe that mysterious infrared halo across the night sky may be related to isolated stars outside the galaxy's borders.

The halo at the far corner of the universe has always been a mystery to Earth scientists

Team leader Asantha Cooray of the University of California in Irvine (USA) said infrared light halo on the night sky has long been a big mystery without a reply.

However, after analyzing the data obtained from NASA's Spitzer space telescope, perhaps these stars once belonged to certain galaxies before violent mergers threw them away from the house. familiar.

'We have new evidence that the upper light belongs to stars that are lingering in the intergalactic space. If they stand alone, they are too weak to be seen from Earth, but the spectacle we see is their gathering light , 'Cooray expert said.

To draw this conclusion, experts using Spitzer study a wide angle, with an arc equivalent to the diameter of 50 times of the full moon, according to Nature.

Experts say it will conduct a new study, this time with the Hubble optical telescope, to determine if the prediction is correct.