What is a black hole? How can we understand it?
A black hole is a region of space where gravity is so strong that nothing not even light can escape. It forms when an extremely massive star collapses at the end of its life. The core compresses to an almost infinitely dense point called a singularity.
The boundary beyond which nothing can return is called the event horizon. It is not a physical surface it is a point of no return.
Simple analogy: imagine a rubber sheet pulled tight. Place a bowling ball on it the sheet sags. A black hole is an infinitely heavy point creating a bottomless funnel. Anything that rolls too close falls in and cannot climb back out.
Black holes cannot be seen directly they emit no light. We detect them by their effects: gas spiraling in heats up and glows brilliantly (an accretion disk), and nearby stars orbit them at measurable speeds. In 2019, the Event Horizon Telescope captured the first image of a black hole's shadow in galaxy M87.
Suggested Q&A
General · Class 10- GeneralClass 10Explain the role of an entrepreneur as an innovator and job and wealth generator.
- GeneralClass 10The spirit of entrepreneurship helps an individual to grow. Explain this statement in detail.
- GeneralClass 10Explain the process of entrepreneurship in detail.
- GeneralClass 10Explain the role of entrepreneur as described by Peter Drucker.
- GeneralClass 10How does Jean Baptiste Say envisage the role of the entrepreneur?
- GeneralClass 10According to a famous thinker Peter Drucker, innovation is a specific instrument of an entrepreneur. Hence he believes that an effective entrepreneur converts a source into a resource. When is a source converted into a resource? Explain with the help if an example.