Universe

The universe is all of space and time and their contents, including planets, stars, galaxies, and all other forms of matter and energy. The Big Bang theory is the prevailing cosmological description of the development of the universe. According to this theory, space and time emerged together 13.787±0.020 billion years ago, and the universe has been expanding ever since the Big Bang. While the spatial size of the entire universe is unknown, it is possible to measure the size of the observable universe, which is approximately 93 billion light-years in diameter at the present day. Some of the earliest cosmological models of the universe were developed by ancient Greek and Indian philosophers and were geocentric, placing Earth at the center. Over the centuries, more precise astronomical observations led Nicolaus Copernicus to develop the heliocentric model with the Sun at the center of the Solar System.

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Universe Could Rotate Once Every 500 Billion Years, Study Suggests

Gamma-ray bursts reveal largest structure in the universe is bigger and closer to Earth than we knew: 'The jury is still out on what it all means.'

Half The Universe's Matter Was Missing. Astronomers Just Found It.

Magnetic Fields Can Map the Universe - Here's How

An Interesting Solution to the Hubble Tension: The Universe is Slowly Spinning

Vast swarms of hidden galaxies may be secretly bathing the universe in a soft glow

A 500-Billion-Year Spin: The Tiny Cosmic Twist That Could Rewrite the Universe

Cosmic twist: New study suggests the universe could be spinning - EurekAlert!

Half of the universe’s hydrogen gas, long unaccounted for, has been found: « New measurements of the diffuse ionized hydrogen surrounding galaxies account for missing mass. »

Cosmic twist: The universe could be spinning

Euclid’s First Images Are Here, and They’re Changing How We See the Universe

Major Problem in Physics Could Be Fixed if The Whole Universe Was Spinning

AI finds new ways to observe the most extreme events in the universe

The Most Metal Poor Stars are Living Fossils from the Beginning of the Universe

UH astronomer finds the universe could be spinning - their model suggests the universe could rotate once every 500 billion years

Lost in the Glow: Hidden Galaxies That Could Rewrite the Universe’s Story

Failing to Find Life Tells Us a Lot About Life in the Universe

Exploring the Universe Through Sight, Touch, and Sound

Some dark matter haloes could roll through the universe like hollow cosmic Easter Eggs