This article gives an overview of the main challenges that astronomers face in observing space from Earth: light pollution, light refraction, and irrelevant signals. The author discusses how astronomers keep these challenges in mind when selecting locations for optical telescopes and radio observatories. Specific examples of these locations are noted. After describing the limitations of making observations from Earth, the author concludes with a section about a series of non-earthbound tools, in
Gather, organize, and share content that interests you.