There are no perfect black bodies on the universe. But there are a lot of them which can be approximated (with good precision) by the black body description.
No. The black body is an "ideal thing" or a construct, and there isn't anything that "perfect" in nature.
star cycle
As long as the Universe exists. See related question for more information.
Space is the vast expanse that exists beyond Earth's atmosphere. It is a near-perfect vacuum containing various celestial bodies like planets, stars, galaxies, and black holes. Space exploration has led to significant discoveries about the universe, such as the Big Bang theory and the existence of exoplanets. Understanding space is crucial for advancing scientific knowledge and exploring potential for human colonization beyond Earth.
Yes, larger bodies of dark matter that are considered responsible for pulling apart the universe.
Black holes are considered one of the most dangerous objects in the universe due to their intense gravitational pull that can trap even light. They can devour neighboring celestial bodies and release powerful jets of energy that can destroy anything in their path.
Your question is somewhat vaguely worded. Possibly you are thinking of the force of gravity, possibly you are thinking of a black hole.
There are already black holes within the universe
Zebras have black stripes on their bodies.
Some examples of heavenly bodies in space include stars, planets, moons, asteroids, comets, and meteors. Other space objects like galaxies, nebulae, and black holes also exist in the universe.
The lowest pitch in the universe is difficult to define precisely, but it is generally considered to be the fundamental frequency of a black hole, known as a "black hole tone." This extremely low frequency would be beyond the range of human hearing.
The universe likely contains millions upon millions of black holes.