Celestial sphere articles

What degree can you find the ecliptic on?

The ecliptic plane describes a fundamental line in our sky, representing the path traced by the Sun as viewed from Earth...

What exactly is the ecliptic?

This is the conceptual line where the celestial sphere seems to meet the plane of Earth's path around the Sun. That imag...

What is the apparent path of the Sun along the celestial sphere or equivalently the plane determined by the Earth's orbit called?

The apparent path traced by the Sun across the background stars over the course of a year, which also corresponds to the...

What is the apparent great circle annual path of the Sun in the celestial sphere as seen from the Earth?

The line traced by the Sun across the backdrop of the distant stars over the span of one year defines a fundamental conc...