World's largest cave ⛏🔦

A land of fire and ice captured in mesmerizing real-time footage of lava flowing down a snow-covered mountain in Iceland. 📽: Marco Di Marco

The human hand is made up of 27 bones, 29 joints, and at least 123 named ligaments. 📽: SciePro

A meteor, the Milky Way and Mount Fuji captured by photographer Hayata Suzuki.

Almost all internet traffic is transmitted via submarine cables, which have a total length of around 1.3 million kilometers, or about three times the distance from the Earth to the Moon. 📽: Tyler Morgan-Wall

Amazing timelapse of a SpaceX rocket booster returning to Earth from space.

Two neurons under a microscope sensing one another and connecting. 📽: Dr Lila Landowski

The world's largest firework shell, Yonshakudama, weighs 420 kg (926 lbs) and creates an explosion over 730 meters (2,400 feet) in diameter. 📽: Only in Japan

Timelapse of the harvest moon rising behind a lighthouse in Scituate, Massachusetts. 📽: Mike Cohea

Whale sharks are the largest fish species in the world, with the largest confirmed individual measuring up to 18.8 meters (61.7 feet) in length. 📽: Mohamed Shaffan

The amazing “piglet squid” (Helicocranchia sp.) gets its nickname for its small round body, wiggling tail, and siphon that looks like the nose of a pig. 📽: MBARI