50 years ago, Roger Penrose presented the world with an idea describing a way in which extraterrestrial civilizations could receive energy from black holes. Now the scientist's theory could be proved using the achievements of the Soviet nuclear physicist Yakov Zeldovich.
Wormholes or tunnels in the fabric of space-time are terribly unstable. As soon as at least one photon hits them, the wormhole closes instantly. A new study suggests that the secret to stable wormholes is in their shape.
The event horizon is a hypothetical three—dimensional surface around a black hole. All material objects that cross this line never return from the womb of the cosmic monster. Even the fastest objects in the visible universe—particles of light—cannot overcome the huge attraction of a black hole if they cross the event horizon. But before reaching the area with maximum attraction, photons, according to the new theory, can dance their farewell waltz — spin into so-called light rings.
An unknown dark object has created a gap in the GD-1 stellar stream, located at a distance of about 45.5 thousand light-years from Earth. The most likely explanation for this gap is a supermassive black hole or a clot of dark matter that flew at high speed through a chain of stars.
An international team of scientists has shown for the first time an image of the event horizon of a supermassive black hole, obtained using eight radio telescopes located at different points of the Earth.
How to reconcile two contradictory pillars of modern physics: quantum theory and gravity? For a long time, scientists believed that sooner or later science would recognize this or that theory as dominant, but reality, as always, turned out to be much more interesting. Some studies claim that gravity can occur due to random fluctuations at the quantum level.