ecliptic
Solar year's arc
The ecliptic is the apparent path the sun traces across the sky over the course of a year, or equivalently, the plane of Earth's orbit around the sun.
The zodiac constellations lie along this band.
Planets appear near the ecliptic because the solar system is roughly flat.
The moon's orbit is tilted about five degrees from the ecliptic.
Of the sky above
- equinoxSun crosses celestial midline
- solsticeDay of maximum tilt
- declinationAngular distance from equator
- siderealOf the stars
precession · nutation · celestial sphere · equatorial · transit · aphelion · perihelion · orbital plane
Earth's primary star
- solsticeDay of maximum tilt
- equinoxSun crosses celestial midline
- sunriseMorning light's arrival
- sunsetDay yielding to darkness
daylight · annual cycle · solar year · sunlight · seasons
Path of moving object
- arcCurved line segment
- circuitClosed electrical pathway
- planeWinged flying vehicle
- orbitCurved celestial path
course · sun path · progression · great circle · loop · passage
celestial
Of the sky above
- equinoxSun crosses celestial midline
- solsticeDay of maximum tilt
- declinationAngular distance from equator
sidereal · precession · nutation · celestial sphere · equatorial · transit · aphelion · perihelion · orbital plane · astronomical unit
sun
Earth's primary star
sunset · daylight · annual cycle · solar year · sunlight · seasons
trajectory
Path of moving object
orbit · course · sun path · progression · great circle · loop · passage
cancer
Uncontrolled cell proliferation disease
- libraHistorical weight measure
- zodiacalOf celestial sign divisions
- constellationNamed pattern of celestial bodies
astrology · horoscope · natal · sun sign · star sign · house · ascendant · midheaven
eclipse, eclipsed, eclipses, eclipsing, solar eclipse, lunar eclipse, total eclipse, partial eclipse, annular eclipse