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.
Earth and the Moon are part of the universe, as are the other planets and their many dozens of moons..
Cosmologists today believe that ordinary matter—the kind of matter we interact with every day—is just a small part of the universe.
Most scientists agree that dark energy and dark matter make up a huge percentage of the universe.
In this theory, dark energy makes up more than two thirds of the universe..
According to NASA, the definition of cosmology is "the scientific study of the large scale properties of the universe as a whole." Cosmologists puzzle over exotic concepts like string theory, dark matter and dark energy and whether there is one universe or many (sometimes called the multiverse)..
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.
Earth and the Moon are part of the universe, as are the other planets and their many dozens of moons.
Along with asteroids and comets, the planets orbit the Sun..
Cosmology after Newton and before Einstein 5
Stars 6 Galaxies 7Location and the cosmic center 8
Containment and the cosmic edge 9 Space and time Part II: 10 Curved space 11 Special relativity 12 General relativity 13 Black holes 14 Expansion of the universe 15Cosmological model
Hypothesis about life in the universe
