The phenomenon is created by the shifting play of light and shadow over the lunar surface.
The Mars rover captured images of low ridges called boxwork patterns, which appear like spiderwebs from space.
A distant cluster of galaxies is wrapped in a vast halo of high-energy particles that could be the work of supermassive black holes or a cosmic particle accelerator.
A new quantum recipe for black holes could be the first step toward a theory of "quantum gravity", the "holy grail" of physics.
"Its occurrence is like finding a tropical seed in Arctic ice – indicating either an unexpected local environment or long-distance transport in the early solar system."
Astronomers have discovered a galaxy that has been "frozen in time" for billions of years. Like a celestial dinosaur fossil, this galaxy could reveal the secrets of cosmic evolution.
NASA's Perseverance rover is digging deeper into Mars' geologic past as it begins grinding into rock surfaces to expose material that could hold clues to the planet's ancient environment and habitability.
Ahead of Amazon Prime Day on July 8-11, this limited-time deal gets you $600 off a Nikon Z6 II bundle with a 24-70mm lens included.
"Each new detection brings us closer to understanding the origins of complex organic chemistry in the universe — and perhaps, the origins of the building blocks of life themselves."
The satellites were seen in the night skies near the summit of Maunakea in Hawai'i.