ZNAK SAGITE PORTAL • ČUDNA KNJIŽARA • BIBLIOGRAFIJA
0 Members and 1 Guest are viewing this topic.
NASA is preparing to launch the most powerful space telescope ever. What will it see?
In the 1970s, Hawking proposed that dark matter, the invisible substance that makes up most matter in the cosmos, may be made of black holes formed in the earliest moments of the Big Bang. Now, three astronomers have developed a theory that explains not only the existence of dark matter, but also the appearance of the largest black holes in the universe.
An anti-universe running backwards in time could explain dark matter and cosmic inflation.
Scientists suspect that a “fifth force” may be at work in space. This force, which they believe is mediated by a hypothetical particle called a symmetron is responsible for creating invisible walls in space.
The Big Bang Hypothesis - which states the universe has been expanding since it began 14 billion years ago in a hot and dense state - is contradicted by the new James Webb Space Telescope images, writes Eric Lerner.
But there might be a path using strange quarks. By themselves, strange quarks are pretty heavy, and when they're left alone, they rapidly decay into the lighter up and down quarks. When large numbers of quarks group together, however, the physics may change. Physicists have found that strange quarks can bind with up and down quarks to form triplets, known as "strangelets," that might be stable — but only under extreme pressures. Like the pressures one step above a neutron star.
Scientists unveiled the first "3D map of a magnetic field over a superbubble,” a structure made by exploding stars that contains the solar system.
