Superflares are powerful magnetic events much larger than solar flares. They erupt above giant starspots on a variety of stars, but the mechanism behind them is unclear.
Aurorae on planets outside our solar system, or exoplanets, could be 100 to 1,000 times brighter than those on Earth, according to new research, and this could also affect their habitability.
NASA’s Hubble Space Telescope captured its one-millionth science observation on July 4 while searching for water in the atmosphere of an exoplanet 1,000 light-years away from Earth.