English: Carried by the Sun’s changing magnetic field, a filament, also known as a prominence of hot gas rose from the star’s surface. The event was observed by NASA’s Solar Terrestrial Reflection Observatory (STEREO) mission. STEREO consists of twin spacecraft that orbit the Sun, one spacecraft ahead of the Earth and the other following behind. The spacecraft that travels ahead of Earth captured this image. Viewed against the blackness of space, the prominence appears orange. The orange colour is especially bright near the Sun’s surface, but fainter wisps of orange also appear farther from the star. Instrument: SOHO