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 …

4 days ago · Universe, the whole cosmic system of matter and energy of which Earth is a part.

Jan 5, 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. …

5 days ago · NASA's SPHEREx telescope unveiled its first full-sky map of the universe, combining more than 100 infrared observations into one dazzling mosaic.

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 …

The universe is all the matter, energy, and space that exist. We can observe only a part of it - the observable universe. The entire, universe, including the part we cannot see, may be infinite. …

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 …

Explore the real distance, motion, and perspective of Earth and Moon in an interactive 3D environment. Perfect as a starting point before diving into deep-space maps. Drag, zoom, and …

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, …

Nov 26, 2024 · The universe encompasses everything that exists: all of space, time, matter, energy, galaxies, stars, planets, and even the physical laws that govern them. Here’s an …