The Landsat 8 remote sensing satellite captured this view of La Palma in visible and infrared wavelengths, showing the smoke plume and lava flow from the Cumbre Vieja volcano. Credit: NASA/USGS
Satellites and astronauts orbiting Earth have been tracking the eruption of a volcano on the Spanish island of La Palma for the last three weeks, revealing a red-hot river of lava pouring out of the ground and flowing into the Atlantic Ocean.

