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  2. Orders of magnitude (time) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude_(time)

    5.4 × 10 83 Qs (1.7 × 10 106 years): The approximate lifespan of a supermassive black hole with a mass of 20 trillion solar masses [21] 10 10 10 76.66 {\displaystyle 10^{10^{10^{76.66}}}} Qs: The scale of an estimated Poincaré recurrence time for the quantum state of a hypothetical box containing an isolated black hole of stellar mass [ 22 ...

  3. List of spaceflight records - Wikipedia

    en.wikipedia.org/wiki/List_of_spaceflight_records

    The first space rendezvous was accomplished by Gemini 6A and Gemini 7 in 1965.. Records and firsts in spaceflight are broadly divided into crewed and uncrewed categories. Records involving animal spaceflight have also been noted in earlier experimental flights, typically to establish the feasibility of sending humans to outer space.

  4. Unit of time - Wikipedia

    en.wikipedia.org/wiki/Unit_of_time

    Ten seconds (one sixth of a minute) minute: 60 s: hectosecond: 100 s: milliday: 1/1000 d (0.001 d) 1.44 minutes, or 86.4 seconds. Also marketed as a ".beat" by the Swatch corporation. moment: 1/40 solar hour (90 s on average) Medieval unit of time used by astronomers to compute astronomical movements, length varies with the season. [4]

  5. ‘New generation’ Starship set to push boundaries in highly ...

    www.aol.com/news/spacex-starship-megarocket...

    NASA has agreed to pay SpaceX $4.5 billion across two contracts to develop Starship and complete two crewed lunar landings, the first of which is slated to take off as soon as 2027

  6. Millisecond - Wikipedia

    en.wikipedia.org/wiki/Millisecond

    To help compare orders of magnitude of different times, this page lists times between 10 −3 seconds and 10 0 seconds (1 millisecond and one second).

  7. Spacetime diagram - Wikipedia

    en.wikipedia.org/wiki/Spacetime_diagram

    In Fig 1-1, the plotted object moves away from the origin at a positive constant velocity (1.66 m/s) for 6 seconds, halts for 5 seconds, then returns to the origin over a period of 7 seconds at a non-constant speed (but negative velocity).

  8. Spacetime - Wikipedia

    en.wikipedia.org/wiki/Spacetime

    The constant , the speed of light, converts time units (like seconds) into space units (like meters). The squared interval Δ s 2 {\displaystyle \Delta s^{2}} is a measure of separation between events A and B that are time separated and in addition space separated either because there are two separate objects undergoing events, or because a ...

  9. This Radio Pulse From Space Lasts Three Seconds ... - AOL

    www.aol.com/lifestyle/radio-pulse-space-lasts...

    The pulse lasts 1,000 times longer than other neutron star signals. Researchers guess it probably originates from the star’s powerful magnetic field.