5
Jan 10

Is Earth threatened by a nearby supernova?

Source: SPACE.com


Kepler's Supernova. Credit: NASA/ESA/JHU/R.Sankrit & W.Blair

The star T Pyxidis, which lies over 3,000 light-years away from the Earth in the constellation Pyxis, was previously thought to be far enough away that if anything happened in the way of a supernova, we'd be pretty safe. According to Edward Sion, Professor of Astronomy and Physics at Villanova University, T Pyxidis may be in fact a "ticking time bomb," and potential threat to the Earth if it were to go supernova, which it may do sometime in the future, though very, very far in the future on our timescale: by Scion's calculations, at least 10 million years.(read more)

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5
Jan 10

Astronomers discover waltzing pairs of black holes

Source: Space Daily

An image of the galaxy COSMOS J100043.15+020637.2 taken with
the Advanced Camera for Surveys on the Hubble Space Telescope.

Credit: NASA/ESA/HST.

Astronomers have discovered 33 pairs of waltzing black holes in distant galaxies. This result were presented by Dr. Julia Comerford of the University of California, Berkeley, to the American Astronomical Society meeting in Washington, DC.(read more)

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