Could the earth be sucked into a black hole?

Could The Earth Be Sucked Into A Black Hole?

Could the earth get sucked into a black hole?

People casually talk of black holes being like cosmic vacuum cleaners that suck up stars and planets.

But what exactly are black holes?

What causes them?

And what are the chances that the earth will get sucked into one?

 

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3 Responses to Could the earth be sucked into a black hole?

  1. big-thoughts says:

    I am by no means an expert on this and I’m sure that you will get fuller and better answers but:

    1) It’s important to note that a black hole is a purely theoretical entity which has been predicted by the equations of general relativity and nothing more.

    2) So theoretically, a black hole is formed when a star of sufficient mass undergoes gravitational collapse, whereupon most or all of its mass is compressed into a sufficiently small area of space, which could cause an infinite space-time curvature at that point which is known as a "singularity".

    3) Such a massive space-time curvature would allow nothing, not even light, to escape from the event’s horizon or border.

    As to whether the earth could get sucked into one, I honestly don’t know, but I’d say that at some point in the future that, "yes" it could.

  2. knopfman says:

    The Sun doesn’t yet have nearly enough mass to explode into a supernova, which is what would most likely be necessary for it to create a black hole.

    It is estimated that in about 4-5 billion years that the sun will enter a red giant phase with its outer layers expanding and its core heating up, and whilst it’s possible that the expansion of the outer layers of the Sun will reach the current position of Earth’s orbit, recent research suggests that mass lost from the Sun earlier in its red giant phase will cause the Earth’s orbit to move further out, preventing it from being engulfed.

    However, Earth’s water would be boiled away and most of its atmosphere would escape into space and the surface of the Earth would become too hot for the survival of life one earth as we know it.

    But don’t worry, because not only is the above simple speculation, but we’re talking about billions of years in the future too.

    For those wanting a full explanation, one can be found at will the earth be sucked into a black hole?

  3. Info-man says:

    Could the earth be sucked into a black hole?

    The sun that we circle year after year follows a life cycle that is the same throughout the solar system.

    The cycle has several stages and our Sun is thought to be around 4.57 billion years old and this puts our sun half way through its main-sequence evolution, during which nuclear fusion reactions in its core fuse hydrogen into helium.

    Each second over 4 million tonnes of matter is converted into energy within the sun’s core, and the sun will spend around 10 billion years as a main sequence star.

    The sun does not yet have enough mass to explode into a supernova, instead in 4-5 billion years it will enter a red giant phase with its outer layers expanding and its core heating up.

    Helium fusion will begin when the core reaches around 100MK, and will produce oxygen and carbon.

    Entering the asymptotic giant branch of a planetary nebula phase in about 7.8 billion years, during which instabilities in interior temperature lead the surface of the sun to shed mass.

    While it is likely that the expansion of the outer layers of the sun will reach the current position of Earth’s orbit, recent research suggests that mass lost from the sun earlier in its red giant phase will cause the Earth’s orbit to move further out, preventing it from being engulfed.

    However, Earth’s water will be boiled away and most of its atmosphere will escape into space.

    The increase in solar temperatures over this period is sufficient that by about 500-700 million years into the future, the surface of the Earth will become too hot for the survival of life as we know it.

    Following the red giant phase, intense thermal pulsations will cause the sun to throw off its outer layers, forming a planetary nebula.

    The only object that will remain after the outer layers are ejected is the extremely hot stellar core, which will slowly cool and fade as a white dwarf over many billions of years.

    This stellar evolution scenario is typical of low to medium-mass stars.

    So, “no”, the earth will not get sucked into a black hole, but all known life will cease to exist here.

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