For over a century, astronomers have theorized about the universe’s first stars—massive, luminous objects forged from the ...

A nested series of dusty spirals is captured swirling around a mighty triple star system containing two of the rarest stars ...

A comet hurtling through the solar system from interstellar space is exactly what it appears to be, NASA officials said ...

NASA's James Webb Space Telescope has delivered a first of its kind: a crisp mid-infrared image of a system of four ...