Astronomy and Space
Beta Arae is the brightest star in the constellation of Ara. This is a very luminous, relatively young red supergiant with an apparent visual magnitude of 2.84 and an absolute magnitude of −3.494. Its name is a Bayer designation that is Latinized from β Arae, and abbreviated Beta Ara or β Ara. Based on a photogeometric estimation method, it is 710 light-years away, a distance of which interstellar extinction in the line of sight reduces its apparent magnitude by 0.193 magnitudes.
Global Observing Satellite for Greenhouse gases and Water cycle.
Apollo 13.
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