Table of Contents
What would happen if a 1mm black hole appeared on Earth?
Hossam Aly, Ph. D Astrophysics, University of Leicester, said a 1mm black hole would still have a mass of 10 percent that of Earth. “That means the destruction of the earth’s crust and most of its mantle and the death of everything living on its surface.”
How small would the Earth have to be to be a black hole?
You can define a Schwarzschild Radius based solely on total mass, i.e. Rs=2GMc2. If you plug in the mass of the earth, the radius is about 9 mm — which is how small you would have to compress it to make a black-hole.
Could a small black hole destroy the earth?
Earth is facing no threat because no black hole is close enough to the solar system for our planet. According to NASA, even if a black hole the same mass as the sun replace the sun, Earth still would not fall in.
How big would a black hole the mass of the Earth be?
Parameters
| Object | Mass | Schwarzschild density or |
|---|---|---|
| Observable universe | 8.8×1052 kg | 9.5×10−27 kg/m3 |
| Milky Way | 1.6×1042 kg | 0.000029 kg/m3 |
| TON 618 (largest known black hole) | 1.3×1041 kg | 0.0045 kg/m3 |
| SMBH in NGC 4889 | 4.2×1040 kg | 0.042 kg/m3 |
What would happen if there was a 1mm black hole?
As others pointed out, a 1mm black hole would have an impressive mass of about 10\% of that of the earth. That means they won’t have any problem gathering food. The black hole sphere of influence (the roughly spherical volume around it in which its gravitational attraction will dominate over that of the earth) will have a radius R s o i:
Is it possible to create a penny-sized black hole?
Theoretically yes, but practically it would be impossible to create a penny-sized black hole here on Earth. Forming a penny-sized black hole on Earth would take a huge amount of mass and a method of condensing that mass into a tiny area.
What is the mass of a primordial black hole?
The allowed mass of such primordial black holes is in the range of 10 14 to 10 24 Kg. Black holes with lower mass would have evaporated due to Hawking radiation, and higher mass seems unlikely as they would’ve been detected. In fact, primordial black holes are one of the (less favourite) candidates for Dark Matter.
What is the radius of a black hole around the Earth?
The black hole sphere of influence (the roughly spherical volume around it in which its gravitational attraction will dominate over that of the earth) will have a radius R s o i: Assuming the black hole appears on the earth surface, its sphere of influence would have a radius of about a third of the earth radius.