News tagged with black holes

Hotspots in an active galactic nucleus

The nucleus of a so-called "active" galaxy contains a massive black hole that is vigorously accreting material. As a result, the nucleus often ejects bipolar jets of rapidly moving charged particles that radiate brightly ...

dateOct 24, 2016 in Astronomy
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Did LIGO detect black holes or gravastars?

After the first direct detection of gravitational waves that was announced last February by the LIGO Scientific Collaboration and made news all over the world, Luciano Rezzolla (Goethe University Frankfurt, Germany) and Cecilia ...

dateOct 19, 2016 in Astronomy
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What happens when black holes collide?

The sign of a truly great scientific theory is by the outcomes it predicts when you run experiments or perform observations. And one of the greatest theories ever proposed was the concept of Relativity, described by Albert ...

dateOct 05, 2016 in Astronomy
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What happens when galaxies collide?

We don't want to scare you, but our own Milky Way is on a collision course with Andromeda, the closest spiral galaxy to our own. At some point during the next few billion years, our galaxy and Andromeda – which also happen ...

dateOct 03, 2016 in Astronomy
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