Latest Halo orbit Stories

2011-06-29 10:31:10

The first of two ARTEMIS ("Acceleration, Reconnection, Turbulence and Electrodynamics of the Moon’s Interaction with the Sun") spacecraft is now in its lunar orbit.

Latest Halo orbit Reference Libraries

2004-10-19 04:45:44

Lagrangian Point -- In Lagrangian mechanics, a Lagrangian point (or L-point) is one of five positions in space where the gravitational fields of two bodies of substantial but differing mass combine to form a point at which a third body of negligible mass would be stationary relative to the two bodies. Bodies at the L-point will not move relative to the parent bodies if they are not perturbed by other gravitational forces. They are sometimes also referred to as libration points. The...

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Word of the Day
  • The word or words serving to define another word or expression, as in a dictionary entry.
The word 'definiens' comes from the Latin word 'definire', 'to define'.