SOLAR SYSTEM

Detailed explanation-1: -The universe is often defined as “the totality of existence", or everything that exists, everything that has existed, and everything that will exist.

Detailed explanation-2: -The universe comprises everything that exists. It’s the sum total of time, space, matter, and energy that began expanding 13.8 billion years ago and hasn’t stopped since.

Detailed explanation-3: -Universe all existing matter and space considered as a whole the cosmos.

Detailed explanation-4: -Cosmological constant It is sometimes called a vacuum energy because it is the energy density of empty space – the vacuum.

Detailed explanation-5: -The universe began, scientists believe, with every speck of its energy jammed into a very tiny point. This extremely dense point exploded with unimaginable force, creating matter and propelling it outward to make the billions of galaxies of our vast universe. Astrophysicists dubbed this titanic explosion the Big Bang.

Detailed explanation-6: -The Universe is thought to consist of three types of substance: normal matter, ‘dark matter’ and ‘dark energy’.

Detailed explanation-7: -Infinite Universe Theory The multiverse theory, advanced by other scientists and physicists, says the spaceship would eventually reach the end of our universe, and then transition into another universe-and then another and another and another, for an infinite amount of time.