Over the quarter century I’ve been writing this column, I've been flabbergasted by the advances in telescopes for backyard ...

Reflector telescopes tend to have larger apertures ... You get two types of catadioptrics, the Schmidt-Cassegrain and the Maksutov-Cassegrain. As a general rule, the Maksutov-Cassegrain is better ...

At one extreme stands the individual observer, peering through a telescope or simply ... 18-inch carbon-fiber Schmidt-Cassegrain, Ritchie-Chretien, and Newtonian reflectors plus an array of ...

NASA's Nancy Grace Roman Space Telescope is one giant step closer to unlocking the mysteries of the universe. The mission has ...

The galaxies, each as vast as the Milky Way, are baffling because most scientific models for galaxy evolution suggest ...

Roughly 400,000 years after the Big Bang, the universe cooled just enough to allow photons to escape from the primordial ...

The James Webb Space Telescope has captured new imagery of supernova remnant Cassiopeia A. It is 11,000 light-years away in ...

The radar antenna reflector for the NASA-ISRO Synthetic Aperture Radar (NISAR) mission arrived at the spacecraft integration and test facility of the Indian Space Research Organisation (ISRO ...

All the major elements of NASA’s next flagship space telescope are now under one roof as NASA says its development remains on cost and schedule.