What is called outer space?
What is called outer space? Definition of outer space : space immediately outside the earth’s atmosphere broadly : interplanetary or interstellar space.
: space immediately outside the earth’s atmosphere broadly : interplanetary or interstellar space.
How big is outer space?
So logically we’d expect space to be 13.8 billion light years across, right? But the size of the observable universe is actually 46 billion light years, meaning the very first light we can see emitted (380,000 years after the Big Bang), came from a distance that is now 46 billion light years away.
Where is outer space?
A common definition of space is known as the Kármán Line, an imaginary boundary 100 kilometers (62 miles) above mean sea level. In theory, once this 100 km line is crossed, the atmosphere becomes too thin to provide enough lift for conventional aircraft to maintain flight.
What’s in outer space?
Outer space is not completely empty—it is a near perfect vacuum containing a low density of particles, predominantly a plasma of hydrogen and helium, as well as electromagnetic radiation, magnetic fields, neutrinos, dust, and cosmic rays.
