The universe comprises all of existence: all forms of matter and energy, and the structures they form, from sub-atomic particles to entire galactic filaments.

May 2, 2026 · Discover the universe: Learn about the history of the cosmos, what it's made of, and so much more. Concentrations of matter with gravity so powerful not even light can escape. Collections …

Universe Map is your definitive guide to galaxies, stars, and cosmic structures — mapped, analyzed, and optimized for discovery and research.

Apr 10, 2026 · Universe, the whole cosmic system of matter and energy of which Earth is a part.

Aug 31, 2025 · It tells us that the universe began nearly 13.8 billion years ago in a cataclysmic event known as the Big Bang. From a state of unimaginable density and heat, space itself expanded, …

1 day ago · When researchers look up at the sky and wonder if we’re not alone, they also realize the origins of life here on Earth might hold the key to finding out. The chaotic chemical soup of our early...

These are some of the questions addressed by cosmology, the study of the universe as a whole. Smithsonian astronomers and astrophysicists use observational and theoretical techniques to help …

May 3, 2022 · It's quite a big question and a lot is still unknown about the universe, but we'll tell you everything that we do know, from how the universe was created, how old it is and what it's even made...

Feb 3, 2026 · Astronomers have produced the most detailed map yet of dark matter, revealing the invisible framework that shaped the Universe long before stars and galaxies formed. Using powerful …

The universe is the sum total of all the planetary systems, stars, nebulae, galaxies, galactic clusters, black holes, and the atoms and molecules that make all these objects. It also contains all the energy …