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Perhaps unsurprisingly, our universe has just the right mass–energy density, equivalent to about 5 protons per cubic meter, which has allowed it to expand for the last 13.8 billion years, giving time to form the universe as observed today.
NASA explores the unknown in air and space, innovates for the benefit of humanity, and inspires the world through discovery. The universe is everything. It includes all of space, and all the matter and energy that space contains. It even includes time itself and, of course, it includes you.
Our Universe: With Morgan Freeman. Follows different aspects of the natural world, from an expansive look into the origin of the Universe, to life on planet Earth and how its oceans function. Narrated by Morgan Freeman.
- (3K)
- 2022-11-22
- Documentary
- 45
- Exoplanets. Worlds beyond our solar system.
- Stars. Giant balls of hot gas that burn for millions to billions of years.
- Black Holes. Concentrations of matter with gravity so powerful not even light can escape.
- Galaxies. Collections of stars, planets, and vast clouds of gas and dust bound together by gravity.
New ideas and major discoveries made during the 20th century transformed cosmology – the term for the way we conceptualize and study the universe – although much remains unknown. Here is the history of the universe according to cosmologists’ current theories.
Aug 16, 2024 · The most popular theory of our universe's origin centers on a cosmic cataclysm unmatched in all of history—the big bang.
Witness the remarkable story of our universe over billions of years and its inextricable link to life on Earth in this sweeping documentary series. Watch trailers & learn more.
