Description : It can't be seen, can't be felt, can't be heard, and can't be smelt. It lies behind stars and under hills, And empty holes it fills. It comes first and follows after, Ends life, and kills laughter. What is it? -Riddles
Last Answer : The dark.
Description : How can we learn about black holes if they trap light, and can't actually be seen? -Space
Last Answer : The immense gravity of black holes also distorts space itself, so it is possible to see the influence of an invisible gravitational pull on stars and other objects
Description : In the early 17th century, based on his observations with a telescope, Galileo Galilei attacked a belief espoused by the church. That belief was: w) that the earth was flat. x) the sky was a large dome ... seen. y) that the earth was at the center of the universe. z) there are no other planets.
Last Answer : ANSWER: Y -- THAT THE EARTH WAS AT THE CENTER OF THE UNIVERSE.
Description : Approximate age of moon is -----? A. 4.51 billion years B. 4.55 billion years C. 4.53 billion years (Answer) D. 4.57 billion years
Last Answer : C. 4.53 billion years (Answer)
Description : It lies behind stars and under hills, and empty holes it fills. It comes first and follows after, ends life and kills laughter. -Riddles
Last Answer : Darkness.
Description : Why does the sky look blue from inside the earth but the sky looks black from outside or from the moon ?
Last Answer : This is due to the refraction of light. Sunlight has seven colors , blue light has a higher scattering capacity (excluding purple) and blue light is more abundant on Earth. As a result , light is reflected ... space is really dark. As a result , the sky looks blue from the moon or something else.
Description : Approximate age of earth is ----? A. 4.14 billion years B. 4.64 billion years C. 4.54 billion years (Answer) D. 4.34 billion years
Last Answer : C. 4.54 billion years (Answer)
Description : What is the approximate equatorial circumference of the earth? -General Knowledge
Last Answer : The answer is '40,000 km'
Description : What is the approximate equatorial circumference of the earth? -Do You Know?
Last Answer : answer:
Description : What is the approximate diameter of the earth? -Do You Know?
Description : What is the approximate age of the earth ?
Last Answer : Earth is estimated to be 4,500 million years old.
Last Answer : : Answer : 4,500 million years.
Description : $ The approximate distance between the sun and the Earth is about 148.7 million km. ! The dimensions of the habitates, regions of the earth are about
Last Answer : $ The approximate distance between the sun and the Earth is about 148.7 million km. ! The dimensions of ... is wrong D. If both As and R are wrong.
Description : The approximate circumference of the Earth is – (1) 13,000 km (2) 20,000 km (3) 25,000 km (4) 30,000 km
Last Answer : (3) 25,000 km Explanation: The circumference of the earth at the equator is 24,901.55 miles (40,075.16 kilometers). But, if we measure the earth through the poles the circumference is a bit ... slight bulge at the equator. This shape is known as an ellipsoid or more properly, geoid (earth-like).
Description : What is the approximate height of a geostationary satellite from the surface of the earth? (1) 981 km (2) 15000 km (3) 35000 km (4) 55000 km
Last Answer : (3) 35000 km Explanation: A satellite in such an orbit is at an altitude of approximately 35,786 km (22,236 mi) above mean sea level.
Description : What is the approximate path loss from satellite-to-earth station? A. 100 dB B. 150 dB C. 175 dB D. 200 dB
Last Answer : D. 200 dB
Description : What is the approximate percentage of earth coverage of a geostationary satellite at zero degree elevation? A. 33.3% B. 45.2% C. 42.5% D. 30.5%
Last Answer : C. 42.5%
Description : What is the approximate equatorial circumference of the earth?
Last Answer : 40,000 Km
Description : What is the approximate diameter of the earth?
Last Answer : 12,800 Km
Description : What is the approximate circumference of the Earth?
Last Answer : In 2126 AD
Last Answer : 40,000 km
Description : The approximate diameter of the sun is ________ times the diameter of earth
Last Answer : 109
Description : The approximate circumference of the Earth is (1) 13,000 km (2) 20,000 km (3) 25,000 km (4) 30,000 km
Last Answer : 24,901 miles (40,075 km)
Description : Is William Shatner joking when he says that he disputed with an astrophysicist about black holes?
Last Answer : Astrophysicists question each other all the time about stuff nobody really knows anything about. Like the “Big Bang” theory. I’m not an astrophysicist but I have my own opinion about that. And, hey! – ANYBODY could have a good idea! So why not William Shatner???
Description : What goes on inside a black hole's singularity?
Last Answer : Amazingly a question about the Black Hole turns into another ‘Yet amazingly, theists ask’ question! Your one-track mind of trying to demean Christians is what is quite amazing.
Description : ‘Black holes’ refers to--------? A. Holes occurring in heavenly bodies B. Bright spots on the sun C. Collapsing object of high density (Answer) D. Collapsing object of low density
Last Answer : C. Collapsing object of high density (Answer)
Description : Can black holes in theory, be used to travel?
Last Answer : No. They could not. The gravity of a black hole is such that anything entering is stretched beyond liveable limits. If anything were to be spat out, it would my have the same composition anymore. This question would be answered more in general. Meta is for questions about fluther specifically.
Description : When the Black Holes swallow up all of the universes, then what?
Last Answer : I guess it will be all over.
Description : Can dark matter be explained by the supermassive black holes found in almost every galaxy?
Last Answer : answer:also, Dark Matter has existed in the universe since early times.. and new evidence proves that so have the black holes… infact, development of galaxies occurred by accretion of cosmic dust around blackholes… and same thing has been said about the dark matter here..
Description : Shouldn't black holes be regarded as sacred?
Last Answer : Wait…what? You mean like something to worship?
Description : Has anyone ever thought of what black holes really are?
Last Answer : I feel like I’m living in a black hole, which just keeps getting blacker.
Description : What is drilling perfectly, round holes in my tree, they tend to run in a line and the bark is turning black in color
Last Answer : Bees, boring bees. They boor holes, perfectly round holes into wood.
Description : Our broccoli plants have holes in all the leaves, and there are black & orange bugs on all plants; what are they???
Last Answer : after the sun goes down mix 1 teasp liquid hand soap w 1 qt water and spray............................and you might need to repeat this again.....................also when it rains and dries again.
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 : Since the area of event horizon increases as matter falls into it, do stellar black holes ultimately become supermassive black holes as time progresses? -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 : Can Black Holes burst if matter going into them exceeds a certain limit? -Space
Last Answer : A black hole's 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. But if the crushed core contains more than about three times the Sun's mass, no known force can stop its collapse to a black hole.
Description : In what manner does E=mc2, apply to black holes? -Space
Last Answer : E=mc2 applies to black holes just as it applies to any other phenomenon - i.e., whenever matter gets converted to energy or vice versa
Description : What kind of matter are black holes made up of, Solid, Liquid, Gas or Plasma? -Space
Last Answer : An object isn't necessarily heated to a plasma when it falls into a black hole. With quasars matter spirals down towards the event horizon so both it's speed and density increases, but this ... accretion disk is present) and is not anything specifically related to the presence of an event horizon.
Description : How can there be anything left in the universe? Don't black holes suck everything in? -Space
Last Answer : black holes do not live for ever they also die and gravity of of the black hole weaks as you go away from by square of the distance. so they are not able to suck everything is because i) there are small and less number of them the universe is bigger than you can imagine.
Description : What is the spherical boundary of zero thickness in which photons that move around black holes called? -Space
Last Answer : A photon sphere or photon circle is an area or region of space where gravity is so strong that photons are forced to travel in orbits. (It is sometimes called the last photon orbit.) The radius of ... sphere, which is also the lower bound for any stable orbit, is, for a Schwarzschild black hole:
Description : What are black holes with mass satisfying the Ker-Newman inequality called? -Space
Description : According to scientists, how many black holes exist? -Space
Last Answer : Judging from the number of stars large enough to produce such black holes, however, scientists estimate that there are as many as ten million to a billion such black holes in the Milky Way alone.
Description : What are the three sizes of black holes known as? -Space
Last Answer : There are four types of black holes: stellar, intermediate, supermassive, and miniature
Description : What can resist a black hole's gravity? -Space
Last Answer : Black holes are the blackest things in the universe. Because of their enormous, space-bending gravity, everything that falls into them is instantly ripped apart and lost. Scientists have never seen a black hole, because nothing, not even light, can escape them.