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From the perspective of an earthling outer space is a zone that occurs about 100 kilometers 60 miles above the planet where there is no appreciable air to breathe or to scatter light.
Whats in space. When you look up at the night sky you see stars and sometimes the moon and the brighter planets. Much of this infrared and ultraviolet radiation comes from the sun. There are many isolated particles and hydrogen atoms which sometimes form clouds over a billion kilometers wide called nebulae.
High energy x rays gamma rays and cosmic rays particles travelling close to the speed of light arrive from distant star systems. The exact size of the universe is unknown. Away from city lights on a clear night you might see the beautiful band of the milky way stretching across the sky.
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. What s in space it is the perfect app for curious children. The universe contains all of the galaxies stars and planets.
Scientists believe the universe is still expanding outward. Space is usually thought to begin at the lowest altitude at which satellites can maintain orbits for a reasonable time without falling into the atmosphere. Space is also filled with many forms of radiation that are dangerous to astronauts.
There are clouds of interstellar dust and the tiny particles that make up the solar wind. With easy and simple narrated texts educational games and incredible illustrations children will learn basic information about space. A black hole is a place in space where gravity pulls so much that even light cannot get out.
The universe is a vast expanse of space which contains all of everything in existence. What planets are in the solar system what each planet is like the constellations that can be seen in the sky the astronauts the spaceships. In astronomy and cosmology space is the vast 3 dimensional region that begins where the earth s atmosphere ends.
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