Description : What makes the gravity of a black hole so strong? -Space
Last Answer : According to the No-Hair Theorem, a black hole has the interesting property that all information and structure that falls into a black hole becomes trapped from the rest of the universe, and perhaps even ... makes the task even more difficult. Source: wtamu.edu by Sir Christopher S Baird......
Description : A ?black hole? is a body in space which does not allow any radiation to come out. This property is due to its (a) Very small size (b) Very large size (c) Very high density (d) Very low density
Last Answer : Ans: ( c ) Very high density
Description : In Astrophysics, what name is given to a hypothetical hole in outer space from which stars and energy emerge? (1) Black hole (2) Ozone hole (3) Asteroid belt (4) White hole
Last Answer : (4) White hole Explanation: A White Hole is a hypothetical hole in outer space from which energy, stars, and other celestial matter emerge or explode. It is a theoretical celestial object into which matter is funneled from a black hole.
Last Answer : White hole
Description : Who discovered the first strong candidate for a black hole? -Space
Last Answer : Albert Einstein
Description : What do we call the boundary around a black hole where nothing can escape its gravity? -Space
Last Answer : The boundary of the region from which no escape is possible is called the event horizon.
Description : I am invisible, yet everywhere. Yet I am everywhere, I am not active in some places. Sometimes, you can feel me. I can be so strong, I can push you, and even destroy villages and towns. Yet I come unnoticed, you can make me. What am I? -Riddles
Last Answer : The Wind.
Description : What are the operating instructions (in outer space) for a ZERO GRAVITY TOILET?
Last Answer : My dad had a paperback “making of” book in the early ‘70s that showed a full-page photo of the instruction panel. I’m sure someone out there has scanned it.
Description : Some black holes, including the M87 black hole, shoot narrow “jets” of ionized matter away from the black hole at nearly the speed of light. How far do the jets from the M87 black hole extend? -Space
Last Answer : The M87 black hole's jets blast along its axis of rotation to a distance of roughly 5,000 light years.
Description : The black hole is approximately 55 million light years away, how was its existence known and how was it pictured with just telescopes? -Space
Last Answer : The existence of this black hole was first guessed at because the Messier87 galaxy when imaged at radio frequencies shows the signature twin-jets of plasma that are squirted out at near-relativistic ... matter, if one has telescopes with sharp enough vision, which the Event Horizon Telescope had.
Description : How Does A Black Hole Distort Light? -Space
Last Answer : Light rays that pass close to the black hole get caught and cannot escape. Therefore, the region around the black hole is a dark disk. Light rays that pass a little further away don't get caught ... bent by the black hole's gravity. This makes the starfield appear distorted, as in a funhouse mirror.
Description : The Closest Black Hole from Earth is how many Light Years away? -Space
Last Answer : At just 1,000 light-years away, the black hole is closer to our solar system than any other that astronomers have found to date. A thousand light-years might sound distant to us, but in cosmic proportions, it's very close.
Description : A black hole 'belches' light and radiation whenever something falls into its event horizon. What does that mean and why does that happen? -Space
Last Answer : A black hole is an astronomical object with a gravitational pull so strong that nothing, not even light, can escape it. A black hole's “surface,” called its event horizon, defines the boundary where the velocity needed to escape exceeds the speed of light, which is the speed limit of the cosmos
Description : If nothing travels at the speed of light, except light, how can a black hole also pull light into itself? -Space
Last Answer : This bending of the light rays increases as the strength of the gravitational field increases. A black hole is simply a region where the effect on light is so great that light cannot escape the region.
Description : If photons (light) have no mass, how can they be trapped by the gravitational field of a black hole? -Space
Last Answer : Although photons have no mass, they do have energy, and the gravity of a black hole (or any other gravitating body) will attract them. According to Einstein's theory of gravity, it is energy, not mass, that feels the gravitational force. That's the short answer
Description : What is the area surrounding a black hole called? -Space
Last Answer : The event horizon is the "point of no return" around the black hole. It is not a physical surface, but a sphere surrounding the black hole that marks where the escape velocity is equal to the speed of light.
Description : I am the center of gravity, hold a capital situation in Vienna, and as I am foremost in every victory, am allowed by all to be invaluable. Though I am invisible, I am clearly seen in the midst of a ... me for I have long been in heaven yet even now lie embalmed in the grave. What am I? -Riddles
Last Answer : The letter V
Description : An astronaut in outer space will observe sky as (1) white (2) black (3) blue (4) red
Last Answer : black
Description : A Company is called an artificial person because ____. A. it does not have the shape of a natural person. B. it cannot be used in the court of law. C. it is invisible and intangible. D. it exists only in contemplation of law.
Last Answer : C. it is invisible and intangible.
Description : What is Stealth Technology? A. A device which when attached to an aircraft makes it invisible on the radar B. A technology by using which paratroopers can be dropped stealthily behind the enemy columns C. ... D. A technology by which it is possible for the aircrafts to spy in the enemy air-space
Last Answer : ANSWER: C
Description : What is Stealth Technology ? A. A device which when attached to an aircraft makes it invisible on the radar B. A coating which reduces the visibility of an aircraft on radar (Answer) C ... air-space D. A technology by using which paratroopers can be dropped stealthily behind the enemy columns.
Last Answer : B. A coating which reduces the visibility of an aircraft on radar (Answer)
Description : Can a black hole run out of it's lifetime and die? -Space
Last Answer : Hawking radiation reduces the mass and rotational energy of black holes and is therefore also known as black hole evaporation. Because of this, black holes that do not gain mass through other ... and ultimately vanish. For all except the smallest black holes, this would happen extremely slowly.
Description : When our sun runs out of lifetime and collapses/explodes, will it transform into a Black Hole? -Space
Last Answer : The Sun would need to be about 20 times more massive to end its life as a black hole. Stars that are born this size or larger can explode into a supernova at the end of their lifetimes before ... a black hole, an object with a gravitational pull so strong that nothing, not even light, can escape.
Description : Does black hole have a life cycle? -Space
Last Answer : Birth. A stellar-mass black hole starts its life with a death. It's born when a star at least 10 times more massive than our Sun runs out of fuel, having already fused hydrogen into helium, and helium into other elements, from carbon and oxygen all the way up to iron deep in the star's core.
Description : How did the New Horizon Telescope capture the image of a black hole? -Space
Last Answer : Using the Event Horizon Telescope, scientists obtained an image of the black hole at the center of galaxy M87, outlined by emission from hot gas swirling around it under the influence of strong gravity near its event horizon.
Description : Why we see it as a black hole? Why can't it be a space with absence of visible spectrum? -Space
Last Answer : The bending of light around a black hole is very significant because of its extremely large mass. Because of this bending, we see light from material that is behind the black hole, which we would not see if light were traveling in straight lines
Description : Does time works inside black hole? -Space
Last Answer : Near a black hole, the slowing of time is extreme. From the viewpoint of an observer outside the black hole, time stops. ... Inside the black hole, the flow of time itself draws falling objects into the ... . No force in the universe can stop this fall, any more than we can stop the flow of time.
Description : How is the black hole study useful to us and is it in anyway relevant to the gravitational waves? -Space
Last Answer : guess it is true that there is unlikely to be any event in the near future endangering human life that involves Black Holes. However, if that were the criteria upon which we based what we should ... people have a better standard of living and I believe has already been used to rescue lost people.
Description : How black hole has a vast attractive force? What is its density in comparison with Earth and Sun? -Space
Last Answer : There are two things that affect the escape velocity - the mass of object and the distance to the center of that object. For example, a rocket must accelerate to 11.2 km/s in order to escape Earth's gravity ... the mass of our sun would need to be squeezed into a volume with a radius of about 3 km.
Description : How close did Interstellar get to the depiction of a black hole? -Space
Last Answer : At the heart of every galaxy lies a supermassive black hole, where gravity is so strong that nothing — not even light — can escape its boundary. In the movie "Interstellar," a fictional black hole called Gargantua takes center stage. The film came out exactly five years ago, in November 2014
Description : Why does everything in our galaxy orbit the supermassive black hole at the center? -Space
Last Answer : These black holes sank to the center of gravity, the heart of their host galaxy. Since galaxies evolve by merging and colliding with one another, collisions between galaxies will result in supermassive black hole ... the key part of this story. The black holes then collide and grow in size as well.
Description : How can you differentiate between a black hole made up of antimatter from a black hole made up of matter? -Space
Last Answer : In fact, there is no difference between an antimatter black hole and a regular-matter black hole if they have the same mass, charge, and angular-momentum. ... Antimatter has positive mass just like regular matter and experiences gravity the same way.
Description : Does every black hole contain a singularity? -Space
Last Answer : In the real universe, no black holes contain singularities. In general, singularities are the non-physical mathematical result of a flawed physical theory. When scientists talk about black hole singularities, ... theory, it is simply a sign that your theory is too simple to handle extreme cases.
Description : Which of these radiations is used to study the black hole? -Space
Last Answer : When our eyes look at the heavens we see the visible light from stars and other objects in the Universe. Thousands of years ago astronomers in Greece and other ancient cultures already built a detailed ... . We encounter radio waves often in our daily lives, for example in radios and cell phones.
Description : What pulls objects into a black hole? -Space
Last Answer : Black holes don't suck. Suction is caused by pulling something into a vacuum, which the massive black hole definitely is not. Instead, objects fall into them just as they fall toward anything that exerts gravity, like the Earth
Description : Which of these is not related to the science of black hole? -Space
Last Answer : A black hole is a region of spacetime where gravity is so strong that nothing—no particles or even electromagnetic radiation such as light—can escape from it. The theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole.
Description : Is a black hole really a hole? -Space
Last Answer : black hole is a region of spacetime where gravity is so strong that nothing—no particles or even electromagnetic radiation such as light—can escape from it. The theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole.
Description : How big can a black hole be? -Space
Last Answer : A supermassive black hole (SMBH) is the largest type of black hole, on the order of hundreds of thousands to billions of solar masses ( M ☉), and is theorized to exist in the center of almost all massive galaxies.
Description : What surrounds a black hole? -Space
Last Answer : There are two basic parts to a black hole: the singularity and the event horizon. The event horizon is the "point of no return" around the black hole. It is not a physical surface, but a sphere surrounding the black hole that marks where the escape velocity is equal to the speed of light
Description : How is a black hole formed? -Space
Last Answer : Stellar black holes form when the center of a very massive star collapses in upon itself. This collapse also causes a supernova, or an exploding star, that blasts part of the star into space. Scientists think supermassive black holes formed at the same time as the galaxy they are in.
Description : Can a black hole collapse on itself? -Space
Last Answer : A black hole with a mass of around 1 solar mass will evaporate in around 2×1066 years. All objects with a temperature will emit radiation.
Description : When was the first picture of the black hole taken? -Space
Last Answer : answer:
Description : What is Singularity of the Black Hole? -Space
Last Answer : A gravitational singularity, spacetime singularity or simply singularity is a location in spacetime where the mass and gravitational field of a celestial body is predicted to become infinite by general relativity in a way that does not depend on the coordinate system.
Description : When did Albert Einstein Predict the black hole with his theory of relativity? -Space
Description : Which is the oldest black hole? -Space
Last Answer : Quasar J0313-1806
Description : Which black hole was first discovered? -Space
Last Answer : Just 670 million years after the Big Bang, a quasar with a monstrous black hole dominated a growing galaxy. Just 670 million years after the Big Bang, the quasar J0313-1806 was born. It's the most distant black hole ever discovered.
Description : According To the Schwarzschild Radius what size would you have to compress the earth to make a black hole? -Space
Last Answer : You can define a Schwarzschild Radius based solely on total mass, i.e. Rs=2GMc2. If you plug in the mass of the earth, the radius is about 9 mm --- which is how small you would have to compress it to make a black-hole.
Description : When our body goes inside a Black Hole an effect acts on our bodies. What is the effect called? -Space
Last Answer : Of course, no matter what type of black hole you fall into, you're ultimately going to get torn apart by the extreme gravity. No material, especially fleshy human bodies, could survive intact. So once you pass beyond the edge of the event horizon, you're done. There's no getting out.
Description : Will an observer falling into a black hole be able to witness all future events in the universe outside the black hole? -Space
Last Answer : No, completely opposite situation to the OP's expectations. If a falling observer will transmit a powerful beam of light out of the hole, then photons will reach increasingly far future of the exterior universe.
Description : How small can a black hole be? -Space
Last Answer : There's no minimum size. There's a minimum density. Stars turn themselves into black holes when they exhaust their fuel and collapse. For that to yield a black hole, they need to start off with around 25 solar masses.