What's behind the northern lights that dazzled the sky farther south than normal

Another in a series of unusually strong solar storms hitting Earth produced stunning skies full of pinks, purples, greens and blues farther south than normal, including into parts of Germany, the United Kingdom, New England and New York City.

What's behind the northern lights that dazzled the sky farther south than normal

What's behind the northern lights that dazzled the sky farther south than normal

What's behind the northern lights that dazzled the sky farther south than normal

What's behind the northern lights that dazzled the sky farther south than normal

What's behind the northern lights that dazzled the sky farther south than normal