neutron star

Wednesday January 17, 2018

Black Holes: Where Reality Beats Fiction

Astronomers have discovered a star, shown in an artist's rendition, that appears to be orbiting an invisible black hole with about four times the mass of the sun. L. Calçada/ESO hide caption

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L. Calçada/ESO

13.7: Cosmos And Culture

Black Holes: Where Reality Beats Fiction

January 17, 2018 • We know that at the heart of pretty much every galaxy, there is a giant black hole. There is a lot that we know about black holes — and a lot that we don't know, says astrophysicist Marcelo Gleiser.

Wednesday October 18, 2017

David Reitze of the California Institute of Technology and the executive director of the Laser Interferometer Gravitational-Wave Observatory, or LIGO, speaks at the National Press Club in Washington on Oct. 16. He talks of one of the most violent events in the cosmos, the collision of neuron stars, that was witnessed completely for the first time in August. Susan Walsh/AP hide caption

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Susan Walsh/AP

13.7: Cosmos And Culture

A New Era For Astronomy Has Begun

October 18, 2017 • Astronomy is forever changed by the viewing of the collision of neutron stars; we can now watch these processes in many different ways as they run their course, says astrophysicist Marcelo Gleiser.