But few are fortunate enough to see Kelvin-Helmholtz clouds, which look like a pattern of ocean waves in the sky. Kelvin-Helmholtz clouds, also known as fluctus clouds, is a rare phenomenon that's ...

whose team discovered the moon’s ocean in February 2024, told the BBC magazine. Pieces of Halley’s Comet could leave glowing trails across the night sky Look up: This planet is about to pass ...