A team of astronomers have found a mysterious object in the distant universe that could be dark matter or an inactive smaller ...

I/ATLAS, a mysterious interstellar object racing toward the Sun, is baffling scientists with its speed and origin. Some ...

Astronomers have made an unexpected and groundbreaking discovery in our solar system—a ring system forming around Chiron, a ...

Johns Hopkins researchers may have identified a compelling clue in the ongoing hunt to prove the existence of dark matter. A ...

More than two decades after it was first discovered, a mysterious ‘underwater city’ off the coast of Cuba is back in the ...

Everything we see around us, from the ground beneath our feet to the most remote galaxies, is made of matter. For scientists, that has long posed a problem: According to physicists’ best current ...