Oceans cover three-quarters of the Earth, yet only 20% of the seafloor has yet been mapped. The race to understand these depths could further scientific understanding, but also lead to exploitation.

Perhaps the most otherworldly section of Shenandoah Caverns is “Diamond Cascade,” where thousands of tiny crystalline formations catch the light like a subterranean galaxy.

Astronomers detect a fast radio burst from 10 billion years ago, FRB 20240304B, revealing clues about the early universe.