The Universe in a Table (2024)

FAQs

What is the universe question and answer? ›

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.

Now, thanks to detailed maps showing the faint echo of the Big Bang — what astronomers call the “cosmic microwave background” — we know the universe is 13.82 billion year old, give or take 10 million years. It's a staggering achievement in “precision cosmology.” But we don't have all the answers about our universe.

The Universe consists of everything that exists anywhere in space. All the heavenly bodies such as the sun, the moon and the stars which are seen with the naked eye and many more celestial bodies such as planets, asteroids, satellites, comets, meteors, meteorite, which are not seen with the naked eyes.

The universe is made up of matter and energy. Visible, or normal matter, makes up everything we can touch and see, including ourselves, dogs, trees, planets, and stars.

The number 42 is, in The Hitchhiker's Guide to the Galaxy by Douglas Adams, the "Answer to the Ultimate Question of Life, the Universe, and Everything", calculated by an enormous supercomputer named Deep Thought over a period of 7.5 million years.

"Will the Universe end?" is one of the biggest, and perhaps most important, questions about the Universe. Whether the Universe will exist forever or in some way 'end' depends on its rate of expansion, the average density of matter, and the fractions of matter, dark matter and dark energy it contains.

The Universe is the biggest when compared to a galaxy or the Solar System.

Our universe is also called the cosmos. It is originally a greek word. In early days it was thought that our Galaxy constituted the entire universe.

Before 1999, astronomers had estimated that the age of the universe was between 7 and 20 billion years. But with advances in technology and the development of new techniques we now know the age of the universe is 13.7 billion years, with an uncertainty of only 200 million years.

How big is our universe? ›

Size: 94 Billion Light Years. The most distant objects in the Universe are 47 billion light years away, making the size of the observable Universe 94 billion light years across. How can the observable universe be larger than the time it takes light to travel over the age of the Universe?

There's a limit to how much of the universe we can see. The observable universe is finite in that it hasn't existed forever. It extends 46 billion light years in every direction from us. (While our universe is 13.8 billion years old, the observable universe reaches further since the universe is expanding).

Matter and energy are the two basic components of the entire Universe. An enormous challenge for scientists is that most of the matter in the Universe is invisible and the source of most of the energy is not understood.

Universe is a name given to all the matter around us. Our universe is also called the cosmos. It is originally a greek word. In early days it was thought that our Galaxy constituted the entire universe.

The Big Bang was the moment 13.8 billion years ago when the universe began as a tiny, dense, fireball that exploded. Most astronomers use the Big Bang theory to explain how the universe began. But what caused this explosion in the first place is still a mystery.