It comprises all of existence, any fundamental interaction, physical process and physical constant, and therefore all forms of matter and energy, and the structures they form, from sub-atomic particles to …

Jan 29, 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.

Feb 3, 2026 · Universe, the whole cosmic system of matter and energy of which Earth is a part.

May 3, 2022 · The universe is literally everything, the sum of all existence. It includes all matter, like stars and galaxies. The universe also includes all radiation and all other forms of energy. No matter...

5 days ago · For centuries, humanity’s view of the universe was simple: The stars are fixed in place for eternity, twinkling gently in the night sky. That simple, static view fell apart in the late 1920s, when …

Dec 15, 2025 · Big Bang science explains the universe origin, key evidence, unresolved tensions, and how new James Webb data is reshaping cosmic history.

The universe is filled with an amazing variety of celestial objects. Find out about astronomy through history, how we understand the sky, constellations, sky maps and stars, exoplanets, galaxies, and …

1 day ago · In a clockwork predictable Universe, comets and how they will ultimately perform is always a big wild card. A new sungrazer comet discovered at the start of this year has given astronomers pause.

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 …