: space immediately outside the earth’s atmosphere broadly : interplanetary or interstellar space.
What is known as outer space?
Outer space, also simply called space, refers to the relatively empty regions of the universe outside the atmospheres of celestial bodies. Outer space is used to distinguish it from airspace (and terrestrial locations).
What is outer space in simple words?
Outer space is the expanse that exists beyond Earth and between celestial bodies . Outer space is not completely empty—it is a hard 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.
Where is outer space?
If you want to talk REAL outer space , the kind where Earth’s atmosphere gives way to the wind of particles blowing from the sun, that’s much farther out. The outermost layer of the atmosphere, the exosphere, pretty much ends at 6,200 miles (10,000 km) — 100 times beyond the Kármán Line.
What made outer space?
During the Big Bang, all of the space, time, matter, and energy in the Universe was created. This giant explosion hurled matter in all directions and caused space itself to expand. As the Universe cooled, the material in it combined to form galaxies, stars, and planets.
Why is it called space?
Prior to Milton, the word “space” has its history in English stretching back as far as the 14th century , variously meaning “place, extent of time, territory, distance between two points.” The word descends from the Old French word “espace”, ultimately from the Latin “spatium”, with more or less the same meaning as its ...
What keeps space empty?
A point in outer space is filled with gas, dust , a wind of charged particles from the stars, light from stars, cosmic rays, radiation left over from the Big Bang, gravity, electric and magnetic fields, and neutrinos from nuclear reactions. ...
What is space simple?
Space, also known as outer space, is the near-vacuum between celestial bodies . It is where everything (all of the planets, stars, galaxies and other objects) is found. On Earth, space begins at the Kármán line (100 km above sea level). This is where Earth’s atmosphere is said to stop and outer space begins.
What is space English?
(Entry 1 of 2) 1 : a period of time also : its duration. 2a : a limited extent in one, two, or three dimensions : distance, area, volume. b : an extent set apart or available parking space floor space.
How is space formed?
Around 13.8 billion years ago, all the matter in the Universe emerged from a single, minute point, or singularity, in a violent burst . This expanded at an astonishingly high rate and temperature, doubling in size every 10-34 seconds, creating space as it rapidly inflated.
How cold is space?
Hot things move quickly, cold things very slowly. If atoms come to a complete stop, they are at absolute zero. Space is just above that, at an average temperature of 2.7 Kelvin (about minus 455 degrees Fahrenheit) . But space is mostly full of, well, empty space.
How far is space from the ground?
The U.S. military and NASA define space differently. According to them, space starts 12 miles below the KaÌ rmaÌ n Line, at 50 miles above Earth’s surface. Pilots, mission specialists and civilians who cross this boundary are officially deemed astronauts.
How many feet up is space?
The FAI defines the Kármán line as space beginning 100 kilometres (54 nautical miles; 62 miles; 330,000 feet ) above Earth’s mean sea level.
Can space be created?
No . And nor is energy. Energy is the one thing we can neither create nor destroy, and it seems to be intimately related to what space is. But nevertheless the stress-ball does get bigger as the pressure reduces, so it’s reasonable to say space is “created”.
Are there atoms in empty space?
Atoms are not mostly empty space because there is no such thing as purely empty space . ... Atoms are filled with electrons. It’s true that a large percentage of the atom’s mass is concentrated in its tiny nucleus, but that does not imply that the rest of the atom is empty.
How old is space?
Scientists’ best estimate is that the universe is about 13.8 billion years old .
