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  2. Comparison of orbital launch systems - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_orbital...

    Falcon 9 Block 5, the most prolific active orbital launch system in the world. This comparison of orbital launch systems lists the attributes of all current and future individual rocket configurations designed to reach orbit. A first list contains rockets that are operational or have attempted an orbital flight attempt as of 2024; a second list ...

  3. Spacetime diagram - Wikipedia

    en.wikipedia.org/wiki/Spacetime_diagram

    On the left, the world line of the falling object. On the right, the vertical world line of the rocket. The photon world lines are determined using the metric with =. [31] The light cones are deformed according to the position. In an inertial reference frame a free particle has a straight world line. In a non-inertial reference frame the world ...

  4. Messier 87 - Wikipedia

    en.wikipedia.org/wiki/Messier_87

    The jet is surrounded by a lower-velocity non-relativistic component. There is evidence of a counter jet, but it remains unseen from the Earth due to relativistic beaming. [99] [100] The jet is precessing, causing the outflow to form a helical pattern out to 1.6 parsecs (5.2 light-years). [76]

  5. Non-relativistic spacetime - Wikipedia

    en.wikipedia.org/wiki/Non-relativistic_spacetime

    The classic example of a non-relativistic spacetime is the spacetime of Galileo and Newton. It is the spacetime of everyday "common sense". [1] Galilean/Newtonian spacetime assumes that space is Euclidean (i.e. "flat"), and that time has a constant rate of passage that is independent of the state of motion of an observer, or indeed of anything external.

  6. Relativistic rocket - Wikipedia

    en.wikipedia.org/wiki/Relativistic_rocket

    Relativistic rocket means any spacecraft that travels close enough to light speed for relativistic effects to become significant. The meaning of "significant" is a matter of context, but often a threshold velocity of 30% to 50% of the speed of light (0.3 c to 0.5 c ) is used.

  7. List of orbital launch systems - Wikipedia

    en.wikipedia.org/wiki/List_of_orbital_launch_systems

    Several rockets of the Long March family Long March 2F Long March 5 Zhuque-2. ... Relativity Space launch vehicles. ... a non-profit organization.

  8. Bell's spaceship paradox - Wikipedia

    en.wikipedia.org/wiki/Bell's_spaceship_paradox

    This means, by definition, that with respect to S the distance between the two rockets does not change even when they speed up to relativistic velocities." [1] Then this setup is repeated again, but this time the back of the first rocket is connected with the front of the second rocket by a silk thread. They concluded:

  9. World line - Wikipedia

    en.wikipedia.org/wiki/World_line

    A world line of an object (generally approximated as a point in space, e.g., a particle or observer) is the sequence of spacetime events corresponding to the history of the object. A world line is a special type of curve in spacetime. Below an equivalent definition will be explained: A world line is either a time-like or a null curve in spacetime.