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15 de sept. de 2021 · What does a black hole look like? Which optical effects appear in its surroundings? What do we see when we cross its horizon? All these answers in 15 minutes! ...more.
3 de may. de 2023 · Black holes are extremely massive, but that mass is concentrated in a smaller area, creating a high density that increases the maximum force of a black hole’s gravity by allowing objects to get very close to all of that mass. When an object gets “too close,” it will start to experience tidal forces.
23 de sept. de 2019 · While black holes are mysterious and exotic, they are also a key consequence of how gravity works: When a lot of mass gets compressed into a small enough space, the resulting object rips the very fabric of space and time, becoming what is called a singularity.
Put simply, if a black hole sucks things in, then a white hole spits them out again – wherever that may be – and the two are connected via an inter-dimensional tunnel, known as a wormhole. Or, it’s also hypothesised, if you waited long enough, the black hole will turn into a white one, anyway.
6 de may. de 2024 · The simulated black hole’s event horizon spans about 16 million miles (25 million kilometers), or about 17% of the distance from Earth to the Sun. A flat, swirling cloud of hot, glowing gas called an accretion disk surrounds it and serves as a visual reference during the fall.
8 de sept. de 2020 · A black hole is an astronomical object with a gravitational pull so strong that nothing, not even light, can escape it. A black hole’s “surface,” called its event horizon, defines the boundary where the velocity needed to escape exceeds the speed of light, which is the speed limit of the cosmos.
17 de abr. de 2024 · The Milky Way has a big newfound black hole, and it lurks close to Earth! This sleeping giant was discovered with the European space telescope Gaia, which tracks the motion of billions of stars...
