Astronomy

From molten glass rain to oceans of lava, an intergalactic tour of the most terrifying and beautiful climates out there

The dwarf planet might have had a hot core and liquid oceans

Airbursts from space may be more common than we thought

A space tragedy illuminates the risks of penny pinching

A possible answer to a puzzle at the heart of a flaming jet

Looking for habitable worlds? Check the ones with extreme swings.

An early peep for this year’s peak

The annual Perseid shower spectacle is back—here's how to view it and where it comes from

In 1971, NASA made history with the first moon cruise—and the relic remains

What scientists are learning from these dazzling samples

A phenomenon that captured the imaginations of generations of bathers may be key to understanding planetary formation

When humility launched a new age of space exploration