For years, astronomers have toyed with the idea that the Sun hides an extra planet so distant and dim that even the best ...

Astronomer Eliza Kempton said that she had waited her "entire career" to peer into an atmosphere from this mysterious class of planets.

A Soviet-area spacecraft that orbited Earth for more than 50 years crashed into the Indian Ocean on Saturday, Russian ...

Beneath the United States lies a surprising network of caves shaped over millions of years. Some feel almost otherworldly, ...

They’ve concluded that the Earth was built in the same way that you would build a big snowball to make a snowman. The mass that would become our home rolled through planetary debris – rocks floating ...

Though astronomers have known about the threat posed by near-Earth objects since the 1970s, efforts to catalogue potentially ...

Kosmos-482, a spacecraft bound for Venus in 1972, was a time capsule from the Cold War when superpowers had broad ambitions for exploring the solar system.

When a star is born, it doesn’t emerge in isolation. Instead, it forms inside a large, chaotic cloud of gas and dust. Around ...

Macduff met the Herald this week at the Jupiter basalt marker along the Columbia Park Trail, just east of the blue bridge. It ...

Reggie, the world’s tallest dog, and Pearl, the world’s shortest dog, recently met for an unforgettable playdate. The event, ...

The work that we’re doing is really important because warning time is everything,” says Danica Remy of the B612 Foundation in ...