If it could, and it couldn't - it would be about the size of a marble of 0.35" radius.
Earth couldn't become a black hole because it has too little mass even though, theoretically, micro black holes could exist. [See related link] The smallest known black hole has 3.8 solar masses. Earth is a tiny, tiny fraction of that mass.
But if there were an Earth-mass black hole, theoretically it would have the 0.35" radius, according to two different formulas.
Cornell University Astronomers give the formula R = (3km) x (M / Msun), where R is the Schwarzschild radius (radius of edge of black hole beyond which nothing returns, ever); M= mass of Earth (or whatever); Msun = mass of the sun. [See related link]
yes and no depends on size of hole :]
Well if your comparing the smallest black hole knowen to humans to the Earth YES THEY ARE BIG but there is no definant diameter or size considering that all black holes are unique in all three size diameter and gravataional pull.
The material sucked in to a black hole becomes part of the black hole - that is, a black hole crushes matter to an nearly no size, at all.
A black hole is basically an imploded star's remnants that DO NOT turn into a nebula or space dust of some type. However, for a "dead" star to become a black hole it must be very big and have tons of mass. The Sun doesn't have that size requirement, therefore cannot be a black hole theoretically.
No. The nearest black hole is thousands of light years away, and it would take a star about 20x the size of the Sun to create one.
The radius, in that case, would have to be a little less than 1 cm.
yes and no depends on size of hole :]
Well if your comparing the smallest black hole knowen to humans to the Earth YES THEY ARE BIG but there is no definant diameter or size considering that all black holes are unique in all three size diameter and gravataional pull.
Depends!!!A white dwarf created from a star the same size as our Sun will only be the size of our Earth.A supermassive black hole can have a diameter of 150 million kilometers (Same distance from the Earth to the Sun).However a stellar black hole can only be 30 kilometers in diameter.There is no minimum size for a black hole, so one "could" be as small as 0.1mm
if you crush something the size of planet earth into something the size of a dime, it is tecnically "possible" to create a black hole.
The theory of a black hole and galaxies is that a black hole created a galaxy or was formed by a galaxy, if that makes sense.Eventually, our solar system will get sucked in. But this will happen in about over a billion years!add. For such a size of black hole, the timescale would be in the billions of years. But before which our Sun would have overwhelmed our Earth in its Red Giant phase.
The material sucked in to a black hole becomes part of the black hole - that is, a black hole crushes matter to an nearly no size, at all.
A black hole is basically an imploded star's remnants that DO NOT turn into a nebula or space dust of some type. However, for a "dead" star to become a black hole it must be very big and have tons of mass. The Sun doesn't have that size requirement, therefore cannot be a black hole theoretically.
Any matter that enters the black hole will be destroyed. Also, it will increase the black hole's size.
A black hole can definitely get to the size of a planet. The width of the largest known supermassive black hole is thought to be over ten times the size of the entire orbit of Neptune around our Sun.
It depends on the mass of the black hole. The size of the event horizon is directly proportional to mass. Most black holes are what we call "stellar mass" black holes which range from about 3 times to 30 times the mass of the sun. The event horizon of a 30 solar mass black hole would be about 110 miles in diameter. Earth, by comparison, is just over 7,900 miles in diameter. An intermediate mass black hole about 1,340 times the mass of the sun would have an event horizon about the same size as Earth. Astronomers have detected supermassive black holes up to 12 billion times the mass of the sun. Such a black hole would have an event horizon 44 billion miles across, or about 5 times larger than the orbit of Pluto.
No. The nearest black hole is thousands of light years away, and it would take a star about 20x the size of the Sun to create one.