Celestial Navigation articles

Is the North Star stationery?

The star we call the North Star, formally known as **Polaris**, is often assumed to be fixed in the night sky, an unmovi...

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...