What makes a black hole?
A black hole is a region in space where the pulling force of gravity is so strong that light is not able to escape. The strong gravity occurs because matter has been pressed into a tiny space. This compression can take place at the end of a star’s life. Some black holes are a result of dying stars.
What is at the center of the milky way galaxy?
The Galactic Center (or Galactic Centre) is the rotational center, the barycenter, of the Milky Way galaxy. Its central massive object is a supermassive black hole of about 4 million solar masses, which is called Sagittarius A*, a compact radio source which is almost exactly at the galactic rotational center.
What does a black hole do?
These infinitely dense points in space will spaghettify anything that ventures too close. Black holes are points in space that are so dense they create deep gravity sinks. Beyond a certain region, not even light can escape the powerful tug of a black hole’s gravity.
Are black holes at the center of all galaxies?
Astronomers believe that supermassive black holes lie at the center of virtually all large galaxies, even our own Milky Way.
Will the black hole in the Milky Way destroy Earth?
Can a Black Hole Destroy Earth? Many believe black holes go around in space eating stars, moons and planets. Scientists have debunked this perception. Earth is facing no threat because no black hole is close enough to the solar system for our planet.
Does Whitehole exist?
White holes cannot exist, since they violate the second law of thermodynamics. General Relativity is time symmetric. It does not know about the second law of thermodynamics, and it does not know about which way cause and effect go.
Is making a portal possible?
The end answer was Yes, portals are physically possible, but the picture is probably not. The worst hand waving has to be done in the process of making the portal. Defining why two sections of space-time would get cemented together in this way is a job for worldbuilders like us, not for scientists.