Question

How can we make artificial blackhole and wormhole?​

Answer 1

Answer:

Minimum mass of a black hole

In principle, a black hole can have any mass equal to or above about 2.2×10−8 kg or 22 micrograms (the Planck mass). To make a black hole, one must concentrate mass or energy sufficiently that the escape velocity from the region in which it is concentrated exceeds the speed of light.