Astronomers have observed a supermassive black hole far from the center of a galaxy where it ought to be giving off bright ...

Even astronomers who study peculiar outer space objects have their favorites. Here are some interstellar bodies that have won ...

For decades, astronomers have looked to the outer reaches of the cosmos for answers to our most fundamental questions: Where ...

NASA's Voyager 2 spacecraft captured dark streaks produced by geysers visible on the icy surface of Triton's south polar ...

While Saturn 's magnificent rings, spanning 175,000 miles (280,000 kilometres), are a familiar celestial marvel, scientists ...

Interstellar comet 3I/ATLAS, or C/2025 N1, is baffling scientists with its carbon-rich chemistry, early water release, and ...

We're just weeks away from this interstellar visitor reaching its brightest in Earth's night skies. Will we see it?

Scientists figured out that the universe is billions of years old — after years of reading ancient rocks and dying stars, and ...