A new cosmic bounce model suggests that remnants from a pre-Big Bang Universe may still…
Browsing: Universe
The universe encompasses all of space and time, including all forms of matter, energy, and the physical laws and constants that describe them. It is vast and possibly infinite in extent, containing billions of galaxies, each with millions to trillions of stars, and many more planets, moons, and other celestial bodies. The universe began approximately 13.8 billion years ago with the Big Bang, which marked the expansion from a singular state of extremely high temperature and density. This expansion continues today, as galaxies move away from each other, indicating that the universe is not static but dynamic and ever-changing. Modern cosmology studies the universe’s origin, structure, evolution, and eventual fate through observations and theoretical physics, utilizing concepts like dark matter, dark energy, and the theory of general relativity to explain phenomena that are otherwise inexplicable, such as the universe’s accelerating expansion.
Tiny galaxies orbiting the Milky Way may hold clues to one of cosmology’s biggest mysteries.…
Primordial magnetic fields may help explain why measurements of the universe’s expansion do not agree.…
Researchers created a technique to reduce uncertainty in cosmic birefringence measurements, resolving a key phase…
Observations show the universe appears flat, yet its true size and global shape beyond the…
An extraordinarily rare, gravitationally lensed supernova may offer a powerful new way to measure the…
Japanese physicists have revived Kelvin’s old idea of cosmic knots, showing how these tangled fields…
Dark-energy evidence suggests the universe will end in a “big crunch” roughly 20 billion years…
Space-time is a map of happenings, not a real object. Understanding this distinction clears up…
Scientists propose that gravitational waves shaped the universe. Their model challenges inflation theory. How exactly…
Most of the universe’s visible matter has been mysteriously missing—until now. Using powerful cosmic radio…
Speculative elements may not be necessary to explain the cosmos. A team of researchers, led…
Guided by fast radio bursts, astronomers at the Center for Astrophysics have mapped how ordinary…
Webb discovered dozens of small, powerful galaxies from 800 million years ago that likely drove…
Scientists have dramatically revised the universe’s expiration date, suggesting everything from black holes to humans…
Recent findings from the Dark Energy Spectroscopic Instrument suggest the possibility of new physics that…
A new paper suggests the anthropic principle—that the universe is fine-tuned for life—can be tested.…
Researchers are using simulations and data from the South Pole Telescope to detect the faint…