A. visible light B. Nebulas C. Helium or D. Xrays
Astronomers think that the areas around black holes suck everything in like when a tub drains. But black holes are large amounts of matter that is packed into a small area.
specifically, "astronomers" that study black holes are called cosmologists.
Astronomers use evidence such as the behavior of nearby stars and gas, as well as the bending of light around invisible objects, to detect the presence of black holes in space.
Yes, black holes are known and regarded by many scientists, astronomers, and physicists.
Because the astronomers can detect that a star is being whirled around in space, or space is being distorted.
Black Holes
Astronomers
Astronomers discover black holes in the universe by observing the effects they have on nearby objects, such as stars and gas. They use telescopes to detect X-rays and other forms of radiation emitted by black holes, as well as studying the gravitational influence they have on surrounding matter.
There are no black holes but there are dark areas known as Sun spots.
Astronomers studying black holes would typically need to study physics, particularly in the areas of general relativity, quantum mechanics, and thermodynamics, to understand the nature and behavior of black holes. They may also need to study astrophysics, cosmology, and computational modeling to analyze observational data and simulate black hole interactions with their surroundings.
Black holes do not emit light, so we cannot observe them directly
Astronomers say that there are several, possibly many, black holes, all a long way from Earth.