synchronous belt
71Naiad (moon) — Naiad Naiad or Thalassa as seen by Voyager 2 (smearing has caused excessive elongation) Discovery Discovered by Voyager Imaging Team Discovery date September 1989 …
73Larissa (moon) — Larissa Two views of Larissa by Voyager 2 Discovery Discovered by Harold J. Reitsema, William B. Hubbard, Larry A. Lebofsky, and David J. Tholen …
74Thalassa (moon) — Thalassa Naiad or Thalassa as seen by Voyager 2 (smearing has caused excessive elongation) Discovery Discovered by Richard J. Terrile[1 …
75Despina (moon) — Despina Despina as seen by Voyager 2 (smeared horizontally) Discovery Discovered by Stephen P. Synnott …
76Galatea (moon) — Galatea Galatea as seen by Voyager 2 (smearing has caused excessive elongation) Discovery Discovered by Stephen P. Synnott[1] …
77Molniya orbit — For other uses, see Molniya (disambiguation). Figure 1: The Molniya orbit. Usually the period from perigee + 2 hours to perigee + 10 hours is used to transmit to the northern hemisphere Molniya orbit is a type of highly elliptical orbit with an… …
78Artificial satellites in retrograde orbit — Artificial satellites are rarely placed in retrograde orbit. This is partly due to the extra velocity required to go against the direction of the rotation of the earth. ExamplesIsrael has successfully launched five Shavit satellites in retrograde …
79Non-rocket spacelaunch — Non rocket space launch (NRS) is a launch into space where some or all needed speed and altitude is provided by non rocket means, rather than simply using conventional chemical rockets from the ground. A number of alternatives to rockets have… …
80Mouse mill motor — Larger Froment motor, circa 1900 Froment s mouse mill motor was an early form of electric motor, also known as the Revolving Armature Engine …
