It is a question that feels like it should have a straightforward answer: how many planets are there in our solar system?

New research from Rice University suggests that the giant planet Jupiter reshaped the early solar system in dramatic ways, ...

Billions of years after a star died, it continued influencing its surroundings in space as a white dwarf, even consuming an ...

Our solar system now, once again, officially consists of only eight planets. Although largely debunked, speculation continued ...

Recently, astronomers detected the presence of a relatively new quasi-moon called 2025 PN7, which appears to orbit our planet ...

Earth has welcomed a new temporary mini-moon, asteroid 2025 PN7, a 62-foot object now orbiting our planet for decades. This ...

The newly discovered "twilight" asteroid, 2025 SC79, was obscured by the sun's glare until an astronomer pointed the Dark ...

This quasi-moon is expected to remain in its current near-Earth orbit for about another 60 years before the gravitational tug ...

In approximately 5 billion years, the sun will deplete its hydrogen fuel and collapse under its own gravity, becoming a white ...

One advantage of Starship, which should be tested in the coming months, is the ability to be refueled in space. The vehicle ...

Hidden deep in ancient rocks, scientists have found the surviving traces of Earth’s first form—unchanged for 4.5 billion ...

Eleven times wider than Earth. Over 300 times more massive. And a million times more terrifying. Jupiter may look like a ...