Black holes are the cosmic gluttons, consuming anything that approaches too closely, even light.Now, a team of worldwide researchers has identified a supermassive black hole that devours the mass of one Earth every second.

By observing other light objects billions of years old, the scientists determined that the newly found behemoth was the brightest and fastest-growing supermassive black hole of the previous nine billion years (that we know of).

This dazzling cosmic beast, located in the constellation Centaurus, is more than 500 times bigger than the supermassive black hole at the centre of our own galaxy.

The results, which are presently being reviewed, were published in a physics academic journal last week.

"People have been looking for these kinds of objects since the 1960s," said lead author Christopher Onken, an astronomer at the Australian National University.

"And somehow, this one seemed to have escaped all our previous efforts to find it."

While searching the Milky Way for nearby pairs of binary stars — stars that circle the same centre of mass — the team came onto the strange object.

They were using the SkyMapper telescope at Siding Spring Observatory near Coonabarabran, between the New South Wales areas of Central West and North West Slopes.

Adrian Lucy, a PhD candidate at Columbia University in New York, discovered over 200 possibilities for binary stars, but according to Dr. Onken, there was something peculiar about them.

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One of them turned out to be unlike a binary system in every way.

To get a closer look at the peculiar object, the crew travelled to Cape Town's South African Astronomical Observatory's 1,9-meter telescope.

Here, they were able to examine the different wavelengths of light emitted by SMSS J114447.77-430859.3, or J1144 for short.

"You really see the detailed fingerprints of what's making up these objects," Dr Onken said.

And it did not resemble a giant star in any way.

Instead, the object featured brilliant lines showing that gas was flowing very quickly, indicating that it was propelled by a supermassive black hole.

Several of the brightest objects in the sky, quasars, are powered by supermassive black holes, which have a mass of millions or billions of Suns.

From Earth, these brilliant objects resemble stars, but their light originates from the accretion disc, a ring of gas, dust, and stars that swirls around the black hole.

"Usually you'll find that the more massive the black hole, the more massive the galaxy is as well," said Dr Cowley, who was not involved in the study.

Keep an eye out for J114 just north-west of the Southern Cross.(Supplied: Christian Wolf/ANU/IAU)

This quasar's brightness is about 7,000 times brighter than all of the light in the Milky Way, making it visible from your backyard with the right telescope.

Dr. Onken recommended a telescope with a diameter of 30 to 40 centimetres and a camera capable of lengthy exposures.J1144 is situated in the sky approximately north-west of the Southern Cross, emanating from the constellation Centaurus.

"It's just right overhead at sunset at this time of year," Dr Onken said.

Reference(s): Research Paper