Two different satellites capture one of the biggest volcanic eruptions ever seen from space

Two different satellites capture one of the biggest volcanic eruptions ever seen from space

A satellite or artificial satellite[a] is an object in space, typically a spacecraft, placed into orbit around a celestial body. Satellites have a variety of uses, including communication relay, weather forecasting, navigation (GPS), broadcasting, scientific research, and Earth observation. Additional military uses are reconnaissance, early warning, signals intelligence and, potentially, weapon delivery. Other satellites include the final rocket stages that place satellites in orbit and formerly useful satellites that later become defunct.

Except for passive satellites, most satellites have an electricity generation system for equipment on board, such as solar panels or radioisotope thermoelectric generators (RTGs). Most satellites also have a method of communication to ground stations, called transponders. Many satellites use a standardized bus to save cost and work, the most popular of which are small CubeSats. Similar satellites can work together as groups, forming constellations.

Volcanic eruptions

A volcano is an opening in the earth’s surface that allows magma (hot liquid and semi-liquid rock), volcanic ash and gases to escape. They are generally found where tectonic plates come together or separate, but they can also occur in the middle of plates due to volcanic hotspots. A volcanic eruption is when gas and/or lava are released from a volcano—sometimes explosively. Volcanoes provide a number of environmental benefits, for example: fertile soils, hydrothermal energy, and precious minerals. But they also pose several hazards: volcanic ash, gases, lahars (mud flows), landslides, lava flows, and pyroclastic flows (fast-moving currents of hot gas). Volcanic eruptions can be deadly and often cause population displacement and food shortages.
https://www.ifrc.org/our-work/disasters-climate-and-crises/what-disaster/volcanic-eruptions