This week, uncover some of the oldest ice on Earth, follow a dinosaur highway, learn how Pluto sealed the capture of its moon Charon with a “kiss,” and more.

Astronomers now suggest that the small celestial body, initially dubbed Earth’s “mini-moon” 2024 PT5, might be a lunar ...

Imagine a piece of string wrapped around the ... In the case of our 'string around the Earth' puzzle, the radius is being increased by 15cm, so we need to know that as a fraction of the original ...