celestial phenomena articles

What causes blue meteors?

What causes blue meteors?

What is the apparent annual path of the sun on the celestial sphere?

What is the apparent annual path of the sun on the celestial sphere?

What is the great circle on the celestial sphere?

What is the great circle on the celestial sphere?

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

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

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

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