We often talk about climate change, melting glaciers, or strange landforms. But we rarely think about something that’s always ...

Lava rock and pea gravel are among the most popular types of landscaping rocks, followed by crushed granite, boulders, river rock, gravel, brick chips, marble rocks, and flagstone.

We thus present the first estimates of rock types on exoplanets that once orbited polluted white dwarfs—stars whose atmospheric compositions record the infall of formerly orbiting plane- tary ...