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  2. Outer space - Wikipedia

    en.wikipedia.org/wiki/Outer_space

    Outer space does not begin at a definite altitude above Earth's surface. The Kármán line , an altitude of 100 km (62 mi) above sea level , [ 9 ] [ 10 ] is conventionally used as the start of outer space in space treaties and for aerospace records keeping.

  3. Kármán line - Wikipedia

    en.wikipedia.org/wiki/Kármán_line

    Earth's atmosphere photographed from the International Space Station.The orange and green line of airglow is at roughly the altitude of the Kármán line. [1]The Kármán line (or von Kármán line / v ɒ n ˈ k ɑːr m ɑː n /) [2] is a conventional definition of the edge of space; it is widely but not universally accepted.

  4. Portal:Outer space - Wikipedia

    en.wikipedia.org/wiki/Portal:Outer_space

    Outer space does not begin at a definite altitude above Earth's surface. The Kármán line, an altitude of 100 km (62 mi) above sea level, is conventionally used as the start of outer space in space treaties and for aerospace records keeping.

  5. Airspace - Wikipedia

    en.wikipedia.org/wiki/Airspace

    The Kármán line (or von Kármán line / v ɒ n ˈ k ɑːr m ɑː n /) [10] is a proposed conventional boundary between Earth's atmosphere and outer space. Until the middle of the 20th century, which was considered the pioneering time of aviation, there were no fixed boundaries as to what was national airspace and when it became international ...

  6. Low Earth orbit - Wikipedia

    en.wikipedia.org/wiki/Low_Earth_orbit

    A view from the International Space Station in a low Earth orbit (LEO) at about 400 km (250 mi), with yellow-green airglow visible at Earth's horizon, where roughly at an altitude of 100 km (62 mi) the boundary between Earth and outer space lies and flying speeds reach orbital velocities.

  7. Atmospheric entry - Wikipedia

    en.wikipedia.org/wiki/Atmospheric_entry

    Atmospheric entry (sometimes listed as V impact or V entry) is the movement of an object from outer space into and through the gases of an atmosphere of a planet, dwarf planet, or natural satellite. Atmospheric entry may be uncontrolled entry, as in the entry of astronomical objects , space debris , or bolides .

  8. What does space smell like? Astronauts describe the ... - AOL

    www.aol.com/news/2018-02-03-what-does-space...

    Ever wonder what outer space smells like? After coming back from a spacewalk and pulling off their helmets, astronauts are hit with the scent of cosmic molecules that hitch a ride on their suits.

  9. Deep space exploration - Wikipedia

    en.wikipedia.org/wiki/Deep_space_exploration

    70-meter-wide radio antenna at the Deep Space Network's Canberra facility in Australia. Deep-space exploration is the branch of astronomy, astronautics, and space technology that is involved with exploring the distant regions of outer space. [1] However, little consensus has been reached on the meaning of "distant" regions.