Retrograde Orbit by Ensign February 20, 2021 0 The orbit of a satellite where the satellite travels in a direction opposite to that direction of the planet's rotation.
Right Ascension by Ensign February 20, 2021 0 The amount of time that passes between the rising of Aries and another celestial object. Right ascension is one unit ...
Ring Galaxy by Ensign February 20, 2021 0 A galaxy that has a ring-like appearance. The ring usually contains luminous blue stars. Ring galaxies are believed to have ...
Roche Limit by Ensign February 20, 2021 0 The smallest distance from a planet or other body at which purely gravitational forces can hold together a satellite or ...
