Tiny, ancient galaxy preserves record of catastrophic event

Pasadena, CA—The lightest few elements in the periodic table formed minutes after the Big Bang.  Heavier chemical elements are created by stars, either from nuclear fusion in their interiors or in catastrophic explosions.  However, scientists have disagre

Suspected supernova is 570 billion times as bright as our sun

"Supernovae shape the universe we live in and there are still many unanswered questions about these explosions, even for the common ones," Ben Shappee tells The Washington Post about the most-luminous supernova ever observed.

Discovery: Most-luminous ever supernova

Pasadena, CA—A team of astronomers, including Carnegie’s Benjamin Shappee, Nidia Morrell, and Ian Thompson, has discovered the most-luminous supernova ever observed, called ASAS-SN-15lh. Their findings are published in Science.

Rotational clock for stars needs recalibration

Pasadena, CA— New work from a team of astronomers led by Carnegie’s Jennifer van Saders indicates that one recently developed method for determining a star’s age needs to be recalibrated for stars that are older than our Sun.

The Giant Magellan Telescope Organization Breaks Ground in Chile

Pasadena, CA – November 11, 2015 – Leading scientists, senior officials, and supporters from an international consortium of universities and research institutions are gathering on a remote mountaintop high in the Chilean Andes today to celebrate groundbreaking for the Gia

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