Director / Editor: Victor Teboul, Ph.D.

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Independent and neutral with regard to all political and religious orientations, Tolerance.ca® aims to promote awareness of the major democratic principles on which tolerance is based.

Say hello to Sagittarius A*, the black hole at the center of the Milky Way galaxy

By Chris Impey, University Distinguished Professor of Astronomy, University of Arizona

Sagittarius A* is a massive black hole at the center of the Milky Way. Now that astronomers have imaged it, they can begin to learn more about black holes within other galaxies across the universe.

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