Newton's reflecting telescope consisted of a single curved ... most major observatories are Newtonian reflectors. During the nascent years of the telescope, most devices were relatively small ...

Dobsonians are reflecting telescopes constructed from cheap materials ... man perched atop a stepladder at the eyepiece of a big Newtonian that was pointing into the southwest sky.

Travel easily with the best small telescopes for observing when going on location or sharing with friends and family: Spot ...

JWST discovers Zhúlóng, the earliest Milky Way-like galaxy, 800 million years after the Big Bang explosion occurred.

The dream of finding life on an alien Earth-like world is hampered by a number of technical challenges. Not the least of ...

The Webb telescope — a scientific collaboration between NASA, ESA, and the Canadian Space Agency — is designed to peer into ...

In 2009, NASA launched the Wide-field Infrared Survey Explorer, or WISE, mission to make infrared observations. This was the ...

Amid harsh cuts, the Trump administration has proposed canceling the nearly ready-to-launch Nancy Grace Roman Space Telescope ...

The image was published as part of the 35th anniversary celebrations of the NASA/ESA Hubble Space Telescope, which was ...

A powerful new observatory is the best hope yet for finding the elusive Planet 9, a large planet that some scientists say is ...

The James Webb Space Telescope's Near-Infrared camera (NIRCam) captured stunning imagery of Neptune. It is the "clearest view ...