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A pair of radio-emitting bubbles that will tower hundreds of light-years above and below our galaxy, the milky way was discovered by an international team of astronomers.
The hour-glass shaped feature is most likely to be the result of a high-energy burst in the vicinity of the Milky way’s supermassive black hole a few million years ago, according to scientists.
“It’s the center of our galaxy, the milky way is relatively peaceful compared to other galaxies with active, central black holes,” said Ian Heywood of the University of Oxford and the lead author of an article appearing in the journal Nature.
“Yes, yes, the Milky way’s central black hole, may, from time to time, may be unusually active, flaring up as it periodically eats huge clumps of dust and gas,” he said in a statement. “It is possible that a similar feeding frenzy and triggered powerful eruptions that have blown up in this incredible position.
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A Radio image of the central parts of the milky way Galaxy. The plane of the milky way galaxy is marked by a series of bold features, exploded stars, and in regions where new stars are being born, and it runs horizontally across the image.
Heywood and his colleagues have used the South-African Radio Astronomy Observatory (SARAO) MeerKAT-telescope, a map of a wide region in the center of the milky way — and even perform measurements in the wavelength range in the vicinity of 23 feet. In the treatment of the very similar features of the earlier bubbles, the researchers believe they have found evidence that they were formed by a violent eruption that quickly snapped up by the inter-stellar medium in the opposite direction.
The form and symmetry of which we have seen suggests very strongly that an amazing, powerful event happened a few million years ago, and was very close to our galaxy’s central black hole,” William Cotton, an astronomer with the National Radio Astronomy Observatory in Charlottesville, Va., and a co-author on the paper, said in a press release.
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“This outbreak was caused by large amounts of interstellar gas fall into the black hole, or a massive burst of star formation, which has sent shock waves careening through the center. This inflated the balloons at the hot, ionized gas near the galactic center, the noise and generate radio waves, which we were able to eventually detect it here on Earth,” Cotton said.
A Radio image of the center of the milky way Galaxy, part of the MeerKAT telescope-the array is in the foreground.
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