There’s a flurry of excitement every time a comet comes into view from Earth. But what are these celestial objects, and where do they come from?

Astronomer Caroline Herschel’s work discovering and cataloging astronomical objects in the 18th century is still used in the field today, but she didn’t always get her due credit.

Astronomer Caroline Herschel’s work discovering and cataloging astronomical objects in the 18th century is still used in the field today, but she didn’t always get her due credit.

There is a very large scientific leap from observing a fireball to claiming it as an alien spaceship.

The Double Asteroid Redirection Test successfully showed that it is possible to crash a spacecraft into a small asteroid. Whether the approach could save Earth from a future threat remains to be seen.

Crashing the 1,340-pound DART probe into the small moonlet orbiting the asteroid Didymos should redirect its trajectory – and could be a model for how to save Earth in the future.

There’s no need to panic about the asteroids heading ‘close’ to Earth in January.

Will Don’t Look Up wake people up? Here’s what the research on climate communication says.

Neowise has an orbit of almost 6800 years, meaning that the last generation of people to see it would have lived during the 5th millennium BC.