Satellites Keep Photobombing Space Images. Astronomers Need a Fix
A new technique could aid Hubble Space Telescope users, but the problem will get worse for observatories on Earth. ..
A new technique could aid Hubble Space Telescope users, but the problem will get worse for observatories on Earth. ..
An energy-saving coating needs no pigments, and it keeps the surface beneath it 30 degrees cooler. ..
More than a decade of eyewitness data shows that fainter stars disappear as artificial light brightens the night sky. ..
Lidar measures distance by bouncing light off of objects—but there’s more to how light travels in the first place. ..
Planck’s constant helps us understand atomic-sized things. One of the best ways to grok it is through this experiment involving different colors of light. ..
A massive South Island stargazing reserve is a respite from light pollution for many species, including our own. ..