Latest about light
Are rainbows really arches?
If you have the right vantage point, a rainbow might look circular. Here's the science behind why some rainbows look like arches and others don't.
World's largest communication satellite is a photobombing menace, astronomers warn
The International Astronomical Union has issued a warning over the newly launched BlueWalker 3 satellite, which is causing interference for both optical and radio telescopes.
New interactive map of the universe is a rainbow-colored slice of cosmic pie
Astronomers have created a colorful interactive map of more than 200,000 galaxies and quasars spanning the lifespan of the cosmos.
Bizarre blue blobs hover in Earth's atmosphere in stunning astronaut photo. But what are they?
An astronaut onboard the ISS recently captured a peculiar image of Earth with two unrelated blue blobs of light shining in the planet's atmosphere.
Early Earth Was Purple, Study Suggests
The planet might once have been dominated by microbes that used a molecule other than chlorophyll to harness Sun’s rays.
New Material Could Make Objects Invisible
Scientists have taken another step toward the goal of rendering objects invisible using high-tech cloaks that redirect light.
Search is on for Hot Young Stars
An astronomer uses gamma ray bursts to shine a light on outer space.
Stunningly perfect 'Einstein ring' captured by James Webb Space Telescope
A new image using data collected by NASA's James Webb Space Telescope shows off one of the most perfect "Einstein rings" ever captured.
