On 24 October 2011, a strong geomagnetic storm hit Earth and sparked a beautiful red aurora in the night sky. People across the eastern United States from Chicago to Alabama excitedly posted about the rare aurora in real-time on Twitter. For many, this storm was their first auroral sighting. For space weather scientist Liz MacDonald, it was the impetus for an idea - to create a crowdsourced project that tracks the aurora in real-time.
展开▼
