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

A compound lens forged by two galaxies is helping astronomers get a bead on the Hubble Constant and dark energy.

In this photo, optical engineer Bente Eegholm inspects the surface of the primary mirror for NASA's Nancy Grace Roman Space Telescope. This 7.9-foot (2.4-meter) mirror is a major component of the ...

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

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

We are at a critical time and supporting climate journalism is more important than ever. Science News and our parent organization, the Society for Science, need your help to strengthen ...

Wolf Hall 2: The Mirror and the Light will see Mark Rylance return to play Henry VIII's advisor Thomas Cromwell. When you purchase through links on our site, we may earn an affiliate commission.

The best telescopes for astrophotography are ideal for both stargazing enthusiasts and those who want to capture the cosmos with their cameras. So which model should you buy? Well, that depends a lot ...

We are at a critical time and supporting climate journalism is more important than ever. Science News and our parent organization, the Society for Science, need your help to strengthen ...

There are only two types of mirrors with optical powers: concave mirrors and convex mirrors, representing positive (P) and negative (N) optical powers, respectively. The TMA optical system has a total ...

A prime example is the European Space Agency’s wide-angle Euclid telescope that launched in 2023 to investigate the riddles of dark energy and dark matter. Euclid this week delivered the first ...