The world’s premier space observatory has spotted a mysterious and huge, free-floating planetary-mass object that’s “just 20 ...

For decades, scientists have studied small satellite galaxies to better understand how the universe’s smallest galaxies ...

"We found that some comets in the inner Oort cloud form a long-lasting spiral structure." Spirals are a repeating theme in ...

NASA's Hubble Space Telescope has uncovered 36 new dwarf galaxies around Andromeda and ongoing star formation within them, ...

NASA’s upcoming SPHEREx mission is on a quest to track down cosmic reservoirs of frozen water and life-essential molecules in ...

Astronomers used the powerful James Webb Space Telescope to peer into this object flying by itself through our Milky Way ...

Astronomers have spotted displays of flashing lights and “fireworks” near a supermassive black hole at the center of the ...

Unlike the typical blue-and-green depiction of Earth, this photo shows the planet in a mossy green hue, framed by a thin ...

Hubble's study reveals Andromeda experienced major galactic collisions, unlike Milky Way. Its satellite galaxies show unusual ...

Milky Way photography can yield some stunning shots from here on Earth. But what if you had a vantage point at some 400km ...

Located 2.5 million light-years away, the majestic Andromeda galaxy appears to the naked eye as a faint, spindle-shaped ...