Solar flare

Periodically, active stars emit bursts of energy known as solar flares.

Historical significance

 * Sometime after the 31st century, Human scientists predicted solar flare activity would sterilize their homeworld, Earth and took measures to prepare. (DW: The Ark in Space)


 * Circa 2,000,000 CE, the Time Lords transported the entire solar system using a magnetron. (DW: ''The Mysterious Planet).


 * In some unknown way, the move once more devastated Earth, which less informed people attributed to solar flares.


 * The Controller exploited a cycle of solar flares, which occured every eleven years, to warn the Doctor and his allies about a mysterious enemy. During this time her masters, the Daleks could not monitor her. (DW: Bad Wolf)