Explore black holes from stellar collapse and event horizons to supermassive black holes, gravitational waves and modern observations.
Begin with clear explanations of the key ideas, discoveries and questions in this subject.
A black hole is a region where matter has been compressed so strongly that, inside a boundary called the event horizon, escape would require moving faster than light. Black holes are not empty holes in space; they are compact gravitational.
Supermassive black holes contain millions to billions of times the Sun's mass and are found at the centers of many large galaxies. Their enormous mas…
General relativity predicts that a large enough mass of matter within a small enough range will deform space time to become a black hole.
Astronomers will use a virtual telescope larger than Earth to record a supermassive black hole in the center of the Milky Way in real time.
The supermassive black hole in the center of the Milky Way swallows more matter and glows abnormally.
Black holes are not necessarily eternal in the simplest quantum description. Stephen Hawking's work showed that quantum effects near an event horizon…
Read recent ScienceInfo stories and explainers about Black Holes.
A newly observed neutron star merger has cast doubt on the previously known mechanism of black hole formation.
The area of gravitational influence around planets, stars, and black holes is spherical because it pulls equally in all directions.
To date, there are still many unknown and uncertain aspects about the properties and behavior of quasars.
What if we - and our entire universe - were inside a black hole?
Currently, humans have not been able to build any spacecraft capable of taking us close to a Black Hole. If we ignore this detail, time travel is completely possible usi…
Hawking's paradox states that in the process of disappearing, black holes destroy all information about their origin, contrary to the rules of quantum physics.
Black holes are a very scary astronomical object and cannot be observed directly, but they can be detected using other physical solutions.
A strange phenomenon described by Harvard scientists as a cosmic burp has been recorded by the Very Large Radio Telescope system located in New Mexico, USA.
Continue with more articles, discoveries and explanations from this subject.
The event horizon is the boundary around a black hole beyond which signals cannot return to a distant outside observer. It is not a solid surface; it is a feature of spa…
For the first time astronomers have measured the rotation speed of a supermassive black hole, and it rotates at nearly the speed of light.
A study published on April 16 said that astronomers have identified an unprecedented stellar black hole in the Milky Way.
Astronomers have discovered two supermassive black holes in the galaxy 2MASX J21240027+340911 orbiting each other closer and closer, both sucking in interstellar matter.
At present masses, fast-growing black holes can only detect a star the size of the Sun every day, according to researchers' calculations.
The giant black hole in the center of our Milky Way galaxy is swallowing matter at unprecedented speed.
New molecules can form in the wind or energy spill streams from super-heavy black holes at the center of galaxies, according to a theory in a study published in the Jour…
3.5 million years ago, a huge explosion had 'flashed' from the center of our Milky Way galaxy. The radiation from the explosion was felt 200,000 light-years away.
Based on computer simulations, scientists discovered that the globular cluster area NGC 6101 contained hundreds of black holes.
British astronomers discovered a supermassive black hole digesting the brightest galaxy of Sagittarius, causing it to die from within.
Scientists use NASA's Chandra X-ray telescope to detect a supermassive black hole in the center of a nearby galaxy.
For the first time, astronomers recorded a spectacular scene when a supermassive black hole tore and swallowed a star.