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  2. Lists of artificial objects sent into space - Wikipedia

    en.wikipedia.org/wiki/Lists_of_artificial...

    The term artificial objects is closely associated with made by humans or not naturally occurring items that have been sent into space. This is a list of lists of artificial objects in space found on Wikipedia. Category:Lists of artificial objects sent into space; Category:Lists of space missions; Lists of spacecraft. Category:Lists of spacecraft

  3. 19 Accidental Inventions That We Can't Live Without Now - AOL

    www.aol.com/19-accidental-inventions-cant-live...

    5. Play-Doh. Who: Kay Zufall, Brian, Joseph McVicker, Bill Rhodenbaugh When: 1956 . How it was created: The gooey toy kids have been playing with for decades began as a household cleaning product ...

  4. List of multiple discoveries - Wikipedia

    en.wikipedia.org/wiki/List_of_multiple_discoveries

    However, discoveries and inventions are inextricably related, in that discoveries lead to inventions, and inventions facilitate discoveries; and since the same phenomenon of multiplicity occurs in relation to both discoveries and inventions, this article lists both multiple discoveries and multiple inventions.

  5. Timeline of historic inventions - Wikipedia

    en.wikipedia.org/.../Timeline_of_historic_inventions

    320 kya: The trade and long-distance transportation of resources (e.g. obsidian), use of pigments, and possible making of projectile points in Kenya [20] [21] [22] 279 kya: Hafting and early stone-tipped projectile weapons in Ethiopia [23] 200 kya: Simple glue made of one kind of material, birch tar, in Central Italy by Neanderthals. [24]

  6. Astronomy - Wikipedia

    en.wikipedia.org/wiki/Astronomy

    Astronomy is a natural science that studies celestial objects and the phenomena that occur in the cosmos. It uses mathematics, physics, and chemistry in order to explain their origin and their overall evolution. Objects of interest include planets, moons, stars, nebulae, galaxies, meteoroids, asteroids, and comets.

  7. List of artificial objects leaving the Solar System - Wikipedia

    en.wikipedia.org/wiki/List_of_artificial_objects...

    In order to leave the Solar System, the probe needs to reach the local escape velocity. Escape velocity from the sun without the influence of Earth is 42.1 km/s. In order to reach this speed, it is highly advantageous to use as a boost the orbital speed of the Earth around the Sun, which is 29.78 km/s.

  8. Timeline of artificial satellites and space probes - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_artificial...

    Vanguard 1. Expected to de-orbit in ~2240AD, this and its upper launch stage are the oldest human-made objects in space. Also the first use of solar cells to power a satellite. [1] 1.47 kg (3.25 lb) March 26 US: Explorer 3: Juno I: Success: Added to data received by Explorer 1. [1] 14.1 kg (31.0 lb) April 29 US: Vanguard 2A: Vanguard TV-5: Failure

  9. List of Japanese inventions and discoveries - Wikipedia

    en.wikipedia.org/wiki/List_of_Japanese...

    This is a list of Japanese inventions and discoveries.The Japanese have made contributions across a number of scientific, technological and art domains. In particular, the country has played a crucial role in the digital revolution since the 20th century, with many modern revolutionary and widespread technologies in fields such as electronics and robotics introduced by Japanese inventors and ...