Black Holes

A layman's explanation of relativity

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In the wiki page about unsuccessful investigations of Einstein, there is only one sentence describe his unsuccessful of unifying general relativity with electromagnetism: Einstein spent many ye...

Echoes detected during a black hole merger that confirmed part of Einstein's theory of relativity could mean there is something at an event horizon, contradicting the same theory. If confirmed, the information would challenge our current assumptions about physics and how black holes are structured, leading to a better understanding of our physical world.

Marcia Bartusiak traces the long history of black hole theories and the controversies they have incited.

At the center of our galaxy, roughly 26,000 light years from Earth, lies the Supermassive Black Hole (SMBH) known as Sagittarius A*. Measuring 44 million km across, this object is roughly 4 million times as massive as our Sun and exerts a tremendous gravitational pull.

One hundred years ago, Einstein predicted the existence of gravitational waves. Today, for the first time, scientists announced that they've actually been detected. Here's what the discovery might mean for our understanding of the universe.

Gravitational-wave data show tentative signs of firewalls or other exotic physics.

Scientists with the Laser Interferometer Gravitational-wave Observatory, or LIGO, have detected the signal from a cataclysmic collision between two black holes that lie 3 billion light-years away – much farther than the previous two discoveries.

A spacetime singularity is a breakdown in the geometrical structure of space and time. It is a topic of ongoing physical and philosophical research to clarify both the nature and significance of such pathologies.

"The bubbles were swirling all around me massaging my body ... As I luxuriated in this fantastic bubble bath, my eyes grew heavy and I drifted into a

In the movie Interstellar, the main character Cooper escapes from a black hole in time to see his daughter Murph in her final days. Some have argued that the movie is so scientific that it should be taught in schools. In reality, many scientists believe that anything sent into a black hole would probably be destroyed. But a new study suggests that this might not be the case after all.