NASA discovers two mysterious bubbles at the centre of galaxy
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The two gamma-ray bubbles, which extend 25,000 light-years north and south of the galactic center, were discovered when NASA researchers were processing images captured by its Fermi Gamma-ray Space Telescope. NASA's Fermi Gamma-ray Space Telescope captures detailed pictures of the sky in every three hours. As scientists say that the bubbles could have formed from a massive burst of star formation that could have occurred in the centre of the Milky Way, creating a massive cloud of energy and gas. Or according to another theory the super-sized massive black hole at the centre of the galaxy gulped down something big, and then released an energy burp that resulted in the emergence of the bubbles.
The bubbles, which may be millions of years old, span more than half of the visible sky, ranging from the constellation of Virgo to the Grus.
via:topnews
