Other traditions developed in isolation and hold different doctrines, though they too share some features due to drawing on similar astronomical sources.

It has been suggested that astronomical sources caused the chirality of biological molecules on Earth.

The most important assumptions of the theorem and their relevance to astronomical sources are discussed here.

Pulsars and masers are the only astronomical sources which exhibit coherence.

Therefore when we measure an astronomical source, its three dimensional structure becomes projected upon a two-dimensional plane.

Receiving light and other signals from distant astronomical sources can even take much longer.

Efforts were made starting in the 1830s and continuing through the 19th century to detect infrared radiation from other astronomical sources.

It is used in many branches of astronomy to characterize astronomical sources.

"For the same reason everyone will, if it is an astronomical source."

With a measured redshift of 8.2, the light from this very remote astronomical source has taken more than 13 billion years to reach the earth.