On Dec. 21, 2021, the Hunga Tonga-Hunga Ha’apai undersea volcano in Tonga erupted with explosive force, sending a shockwave that went around the world several times.
There’s currently another eruption happening in the Pacific nation, which comprises around 170 islands, but it’s a much calmer situation. The underwater Home Reef seamount has risen above the surface of the ocean thanks to a small eruption that began on Sept. 10, and the infant island that it formed has been captured by the powerful Landsat 9 satellite, a joint project between NASA and the U.S. Geological Survey (USGS) that launched to Earth orbit last year.
