For the last 35,000 years, the orbit of Mars has been getting slightly more eccentric because of the gravitational effects of the other planets. The closest distance between Earth and Mars will continue to mildly decrease for the next 25,000 years. Habitability and search for life
Learner's definition of CONTINUUM. [count] formal. : a range or series of things that are slightly different from each other and that exist between two different possibilities. His motives for volunteering lie somewhere on the continuum between charitable and self-serving. a continuum of temperatures ranging from very cold to very hot.
waveÂ·length. n. The distance between one peak of a wave to the next corresponding peak, or between any two adjacent corresponding points, defined as the speed of a wave divided by its frequency.on the same wavelength Informal. In complete accord; in harmony: a fluid ...r waveâ² length`, the distance, measured in the direction of propagation of a wave, between two successive points in the wave that are characterized by the same phase of oscillation. on the same wavelength, sharing values, ideas, or impulses; thinking and acting in harmony.