What Happens Just Outside a Black Hole's Event Horizon?

In summary, the statements accurately describe what one would find just outside the event horizon of an extremely massive black hole like Gargantua. Tidal forces do not cause drastic differences in the gravitational force on different parts of the body, messages can still be sent outside the event horizon but will take a very long time to reach their destination, one does not feel a gravitational force towards the event horizon, there are not an infinite number of images of the outside universe visible in the night sky, stable orbits are possible, and the laws of physics still hold.
  • #1
bjfcool
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Homework Statement


The following statements may or may not accurately describe what you would find just outside the event horizon of an extremely massive black hole like Gargantua (fake black hole), at a distance corresponding to an orbital circumference of 1.0001 times the horizon circumference. True or false for each.

1. Tidal forces cause the force on your head to be stronger than that on your feet, so you are violently squashed together.
2. Any messages you send to the outside world take essentially an infinite amount of time to get there.
3. You feel a gravitational force towards the event horizon.
4. When you look up at the night sky above you, you can see an infinite number of images of the outside universe spread all over your field of view.
5. All orbits are unstable, so instead of orbiting, you hover above the horizon.
6. The laws of physics do not hold.

Thanks
 
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  • #2
Welcome to PF.

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  • #3
I'm pretty sure #6 is true and 1, 4 are false but I've tried 45 times and can't seem to get the right answer. even looked in my textbook. please help it's due soon. Thanks!
 
  • #4
Again, you need to tell us your thoughts, and why you're stuck, or we will not help you! We are not going to give you the answers; give it up.

If it's due soon and you have not planned your time properly, it's no one's fault but your own.

- Warren
 

1. What is the "Event Horizon of Gargantua"?

The "Event Horizon of Gargantua" is a fictional concept that was introduced in the movie "Interstellar". It refers to the point of no return for a massive black hole, beyond which nothing, not even light, can escape its gravitational pull.

2. How is the "Event Horizon of Gargantua" determined?

The "Event Horizon of Gargantua" is determined by the mass of the black hole. The larger the black hole, the larger its event horizon will be. For example, the event horizon of Gargantua in "Interstellar" was estimated to be around 265 million kilometers in diameter.

3. Can anything survive passing through the "Event Horizon of Gargantua"?

No, it is scientifically impossible for anything to survive passing through the "Event Horizon of Gargantua". The immense gravitational forces would tear apart any object, including spacecraft, into tiny particles.

4. How does the "Event Horizon of Gargantua" affect time?

The "Event Horizon of Gargantua" is also known as the "point of no return" because it marks the boundary where the laws of physics, including time, break down. Time near the event horizon of a black hole is greatly affected by its immense gravity, causing it to slow down or even appear to stand still.

5. Is the concept of the "Event Horizon of Gargantua" based on real scientific principles?

While the concept of the "Event Horizon of Gargantua" is based on real scientific principles, it is important to note that it is still a fictional concept created for the purposes of storytelling. While black holes and their event horizons are real phenomena, the depiction of the "Event Horizon of Gargantua" in "Interstellar" is not entirely accurate and is exaggerated for dramatic effect.

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