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Current Affairs

Planets revolving around black hole

Date: 26 November 2019 Tags: Space

Issue

According to latest study, scientists say that thousands of planets could be orbiting around black holes just like we orbit the Sun.

 

Background

Researchers have long thought that planets are formed from pieces of fluffy dust that settle in a disc around a young star. Those protoplanetary discs then form into planets, just like Earth.

 

Details

  • The research suggests that it might be possible for planets to form not around their own sun but instead around a black hole.

  • They might come into existence in far more extreme environments and a black hole could be home to thousands of planets.

  • Researchers looked at heavy discs around supermassive black holes that sit in the heart of galaxies. Those discs can be incredibly vast, and so could the planetary system that grows out of them.

  • Calculations show that tens of thousands of planets with 10 times the mass of the Earth could be formed around 10 light-years from a black hole.

  • That material that revolves aroun the black hole could eventually form into planets, over the course of hundreds of millions of years.

  • Scientists say there is no way of detecting such planetary systems around a black hole, and so no way to know for sure whether planets of this kind have yet formed.

Black hole

A black hole is a region of spacetime exhibiting gravitational acceleration so strong that no particles or even electromagnetic radiation such as light can escape from it.