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  2. Outer space - Wikipedia

    en.wikipedia.org/wiki/Outer_space

    A wide field view of outer space as seen from Earth's surface at night. The interplanetary dust cloud is visible as the horizontal band of zodiacal light, including the false dawn [29] (edges) and gegenschein (center), which is visually crossed by the Milky Way. Outer space is the closest known approximation to a perfect vacuum.

  3. Black - Wikipedia

    en.wikipedia.org/wiki/Black

    The fact that outer space is black is sometimes called Olbers' paradox. In theory, because the universe is full of stars, and is believed to be infinitely large, it would be expected that the light of an infinite number of stars would be enough to brilliantly light the whole universe all the time. However, the background color of outer space is ...

  4. 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.

  5. Portal:Outer space - Wikipedia

    en.wikipedia.org/wiki/Portal:Outer_space

    Outer space (or simply space) is the expanse that exists beyond Earth's atmosphere and between celestial bodies. It contains ultra-low levels of particle densities , constituting a near-perfect vacuum of predominantly hydrogen and helium plasma , permeated by electromagnetic radiation , cosmic rays , neutrinos , magnetic fields and dust .

  6. ‘Sapiens’ author says AI is an alien threat that could wipe ...

    www.aol.com/finance/sapiens-author-says-ai-alien...

    The phenomenal rise of OpenAI’s generative AI chatbot, ChatGPT, over the past year has been a catalyst for major investment in the space, with Big Tech entering into a race to develop the most ...

  7. The US's biggest moments and upsets in space this year - AOL

    www.aol.com/35-photos-show-uss-biggest-111502689...

    Here are the US's biggest moments in space this year and the missions that didn't go so well. This was a big year for space in the US with many historic firsts . SpaceX caught a rocket in mid-air.

  8. Arecibo message - Wikipedia

    en.wikipedia.org/wiki/Arecibo_message

    The message was broadcast into space a single time via frequency modulated radio waves at a ceremony to mark the remodeling of the Arecibo Telescope in Puerto Rico on 16 November 1974. [ 2 ] [ 3 ] The message was aimed at the current location of M13, about 25,000 light years from Earth, because M13 was a large and relatively close collection of ...

  9. Sky - Wikipedia

    en.wikipedia.org/wiki/Sky

    It includes the atmosphere and outer space. It may also be considered a place between the ground and outer space, thus distinct from outer space. In the field of astronomy, the sky is also called the celestial sphere. This is an abstract sphere, concentric to the Earth, on which the Sun, Moon, planets, and stars appear to be drifting.