Topic: Star

Closest Star, Proxima Centauri, has a Planet

Aug. 24, 2016
Promixa b artist impression

An international team of astronomers including Michael Endl of UT Austin have found clear evidence of a planet orbiting Proxima Centauri, the closest star to the Sun.

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Black Hole Chokes on a Swallowed Star

Jan. 27, 2015

A five-year analysis of an event captured by a tiny telescope at McDonald Observatory and followed up by telescopes on the ground and in space has led astronomers to believe they witnessed a giant black hole tear apart a star.

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Astronomers Probe 'Evaporating' Planet Around Nearby Star with Hobby-Eberly Telescope

May 31, 2012

Astronomers from The University of Texas at Austin and Wesleyan University have used the Hobby-Eberly Telescope at UT Austin's McDonald Observatory to confirm that a Jupiter-size planet in a nearby solar system is dissolving, albeit excruciatingly slowly, because of interactions with its parent star. Their findings could help astronomers better understand star-planet interactions in other star systems that might involve life.

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Astronomers Discover Sun's Twin at McDonald Observatory

Nov. 9, 2007

Peruvian astronomers Jorge Melendez of The Australian National University and Ivan Ramirez of The University of Texas at Austin have discovered the best “solar twin” to date, using the 2.7-meter Harlan J. Smith Telescope at McDonald Observatory. Their findings suggest that the Sun’s chemical composition is not unique, as some previously thought.

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