Capture 'ghost' photos in the universe

The Hubble Space Telescope of the US Aeronautics Agency (NASA) has observed the specter of destined celestial bodies lurking around where these objects appear and disappear.

Photo "ghost" in the universe

Photographs taken by Hubble's glass show eight unusual ring-shaped structures orbiting the orbits of galaxies harboring them and glowing ghostly blue light . They appear clearly in space thanks to the radiation explosion from a supermassive black hole in the center of the galaxy.

The most active component of these galactic cores is called quasars , where matter is so heated that it shines brightly like a headlight in deep space. The light emitted from a disc of super hot, radiant gas surrounding the black hole.

" However, quasars are not bright enough to create what we are seeing. This is what remains of what has happened in the past. Bright, bright bands of light tell us that, quasars have been emitting more energy or they are changing very fast, "said Bill Keel, an expert at the University of Alabama, who initiated the Hubble telescope survey.

One possible explanation is that companion pairs of black holes are providing energy for quasars and this may alter their brightness .

According to Mr. Keel, oxygen molecules in bright bands absorbed light from quasars and slowly re-emitted them over thousands of years. There are other elements in these bands, such as hydrogen, helium, nitrogen, sulfur and neon.

Blue bands of light are believed to be long gas tails, which are stretched out by the gravitational pull of the two galaxies. Instead of being broken, these tens of thousands of years of light structures, which are slowly circling the galaxy's orbit, contain them for a long time, up to 1.5 billion years, after the merger finish.