hyungwonns-deactivated20160817:
aphelion – the point in the orbit of a planet, asteroid, or comet at which it is farthest from the Sun.
astral – relating to or resembling the stars.
caldera – a large volcanic crater, especially one formed by a major eruption leading to the collapse of the mouth of the volcano.
celestial – positioned in or relating to the sky, or outer space as observed in astronomy.
constellation – a group of stars forming a recognizable pattern.
cosmos – the universe seen as a well-ordered whole.
equinox – the time or date at which the sun crosses the celestial equator, when day and night are of equal length.
faculae – bright patches that are visible on the Sun’s surface.
lunation – the interval of a complete lunar cycle, between one new Moon and the next.
interstellar – occurring or situated between stars.
nebula – a cloud of gas and dust in outer space, visible in the night sky either as an indistinct bright patch or as a dark silhouette against other luminous matter.
perihelion – the point in the orbit of a planet, asteroid, or comet at which it is closest to the Sun.
synodic – relating to or involving the conjunction of stars, planets, or other celestial objects.