Like stretch marks left on skin that expanded too quickly or cracks embedded in freezing ice, cosmic strings are artifacts of ...

Will two rare supernovas finally tell us how fast the universe is expanding? Perhaps, but we'll have to wait for it for them ...

Recent James Webb Space Telescope data confirms a decade-old theory that the universe's earliest supermassive black holes ...

Scientists are now certain that James Webb will break every such record until the earliest observable light is eventually ...

Neutrino particles have extremely small masses, yet there are so many of them that they carve out the large-scale structure ...

For more than a century, physics has treated space and time as the smooth stage on which the universe unfolds, a flexible fabric that bends but never breaks. A new wave of theories is now challenging ...

Artist Ashley Zelinskie is "Wandering through Time and Space”' with ESA's Webb team. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The James ...

Wormholes are often imagined as tunnels through space or time—shortcuts across the universe. But this image rests on a misunderstanding of work by physicists Albert Einstein and Nathan Rosen. In 1935, ...

An extremely early Type II supernova explosion, named after the Titan goddess of dawn in Greek mythology, occurred just 1 ...

NASA’s Roman Space Telescope is set to embark on a deep-sky survey that could capture nearly 100,000 cosmic explosions, shedding light on everything from dark energy to black hole physics. Its ...

How many electrons are there in the Universe? One bold theory suggests that there could only be one, although this theory has ...