Sentences with phrase «celestial equator»
The "celestial equator" is an imaginary line in the sky that is directly above the Earth's equator. It divides the sky into two equal halves, separating the northern and southern celestial hemispheres. Full definition
Based on knowing these common proper motions and radial velocities, Alpha Centauri will continue to gradually brighten, passing just north of the Southern Cross or Crux, before moving northwest and up towards the present celestial equator and away from the galactic plane.
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Be aware that the star Vega resides quite far north of the celestial equator, so for that reason the Lyrid meteor shower favors the Northern Hemisphere.
Solstices happen when the sun is at its greatest distance from the celestial equator.
Orion is a prominent constellation and has three bright and easily visible stars, and is located on the celestial equator.
The axis of the universe is defined by the terrestrial poles, and the Earth's equator is projected outward, creating a celestial equator as well.
Orion's belt, that most famous article of cosmic clothing, sits smack on the celestial equator, meaning it lies directly over Earth's equator.
Going back and forth between it and M13 — often heralded as the finest globular north of the celestial equator — left little doubt of who is the reigning champ of the globulars.
The segments converge towards the poles, meaning regions near the poles get longer coverage than nearer the celestial equator, allowing planets with longer orbital periods to be discovered.
It might not work for Alpha Centauri, but should be doable for stars nearer the celestial equator.)
At last — the first day of spring, the Vernal Equinox, from the Latin equus (equal) and nox (night), the transition day from winter to spring when the sun crosses the celestial equator on its way north along the ecliptic, when, all over the world, days and nights are approximately equal.