New measurements using gravitational lensing suggest the universe’s current expansion rate does not agree with signals from the early cosmos.

Scientists are testing a novel way to measure cosmic expansion using time delays in gravitationally lensed quasars. Their ...

Tyson’s ultimate goal was to image large swathes of the sky, measuring how galaxies’ shapes distorted as their light ...

Astrophotography has shifted from a niche pursuit to a mainstream hobby, and the telescope you choose now matters as much as ...

Get ready stargazers, the final full moon of 2025 rises tonight! Here's what to expect when the "Cold Supermoon" looms large ...

Here’s everything you need to know about astrophotography in December 2025: ...

Rattling off 45MP images at 30 FPS, the Canon EOS R5 II is basically a cheat code for wildlife photography — get yours for $3 ...

The right tech accessories can significantly enhance your daily routine, seamlessly blending innovation with practicality to improve productivity, ...

Are you prepared for the next total solar eclipse? Now less than a year away, on August 12, 2026, a path of totality will ...

Optical telescopes utilize refraction and reflection to focus light, enabling detailed astronomical observations and ...

What Are the Main Types of Telescopes? A common way to classify telescopes is by the type of signal they detect. Optical telescopes gather visible light; on the other hand, non-optical telescopes ...

Abstract: We present an optimized Light Detection and Ranging (LiDAR) process for $7 \mu \mathrm{~m}$ Single Photon Avalanche Diode (SPAD) pixel. We achieved a Photon Detection Efficiency (PDE) more ...