Black Holes NOT Science?

In summary, the article asserts that the existence of black holes cannot be falsified, and therefore they do not qualify as science. Some people have argued this before, though it is a controversial topic.
  • #71
An observer inside an event horizon would suffer from reverse redshift. He/she would 'see' the universe age at infinite speed according to GR. Draw the light cone.
 
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  • #72
observer inside the horizon reaches signularity in finite time. You mean, he will see everything before he hits singularity? this is not true and I am ready to draw a lightcone.
 
  • #73
My error, you are correct. Time will gradually speed up as observer approaches the singularity.
 
  • #74
Dmitry67 said:
in GR all coordinate systems are equally vaid. So in some coordinate systems BH forms in finite time. In the others we lose communication with the inner parts of BH.

Would you then argue just as animatedly against claims the existence of black holes?
 
<h2>1. What exactly is a black hole?</h2><p>A black hole is a region in space where the gravitational pull is so strong that nothing, including light, can escape from it. It is formed when a massive star dies and its core collapses under its own gravity.</p><h2>2. How do we know black holes exist if we can't see them?</h2><p>While we cannot see black holes directly, we can observe their effects on the surrounding matter and light. For example, we can detect the gravitational lensing effect where the gravity of a black hole bends light from objects behind it.</p><h2>3. Can anything survive a black hole?</h2><p>No, anything that enters a black hole will be crushed and stretched due to the intense gravitational forces. However, some theories suggest that objects may be able to survive the outer edge of a black hole, known as the event horizon, but they would still be unable to escape.</p><h2>4. Are black holes constantly growing?</h2><p>Yes, black holes can grow in size by absorbing matter and merging with other black holes. However, they can also lose mass through a process called Hawking radiation.</p><h2>5. Can black holes be used for time travel?</h2><p>There is currently no evidence to suggest that black holes can be used for time travel. While they do have strong gravitational forces, the laws of physics as we know them do not allow for time travel through black holes.</p>

1. What exactly is a black hole?

A black hole is a region in space where the gravitational pull is so strong that nothing, including light, can escape from it. It is formed when a massive star dies and its core collapses under its own gravity.

2. How do we know black holes exist if we can't see them?

While we cannot see black holes directly, we can observe their effects on the surrounding matter and light. For example, we can detect the gravitational lensing effect where the gravity of a black hole bends light from objects behind it.

3. Can anything survive a black hole?

No, anything that enters a black hole will be crushed and stretched due to the intense gravitational forces. However, some theories suggest that objects may be able to survive the outer edge of a black hole, known as the event horizon, but they would still be unable to escape.

4. Are black holes constantly growing?

Yes, black holes can grow in size by absorbing matter and merging with other black holes. However, they can also lose mass through a process called Hawking radiation.

5. Can black holes be used for time travel?

There is currently no evidence to suggest that black holes can be used for time travel. While they do have strong gravitational forces, the laws of physics as we know them do not allow for time travel through black holes.

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