Astronomical observation has its roots in antiquity. Ever since the citizens of ancient Babylonia, China, Egypt, and Greece designed crude wood tools to measure the movement of the stars and planets across the heavens, humankind has been improving those...

Viewpoint: Yes, the emphasis on the construction of large telescopes is a poor allocation of resources, as smaller telescopes offer accessibility and affordability that larger telescopes cannot match. Viewpoint: No, the emphasis on the construction of...

The telescope is an instrument that collects and analyzes the radiation emitted by distant sources. The most common type is the optical telescope, a collection of lenses and/or mirrors that is used to allow the viewer to see distant objects more...

There is much confusion and debate concerning the origin of the telescope. Many notable individuals appear to have simultaneously and independently discovered how to make a telescope during the last months of 1608 and the early part of 1609. Regardless...

The principle of the telescope was first developed by a Dutch spectacle-maker, Hans Lippershey (1570-1619). He used his first telescope, made in 1608, for observing grounded objects from a distance, rather than astronomy. His invention was not openly...

The telescope is a device that intensifies and magnifies the image of distant objects. The telescope enables astronomers, scientists, and amateurs alike, to observe and study planets, stars, galaxies, and other features of the universe. The observation...

Device that collects light from and magnifies images of distant objects, undoubtedly the most important investigative tool in astronomy. The first telescopes focused visible light by refraction through lenses; later instruments used reflection from...

A telescope is an instrument designed for the observation of remote objects and the collection of electromagnetic radiation. The earliest known telescopes are credited to three individuals, Hans Lippershey and Zacharias Janssen, spectacle-makers in...