Manhattanhenge is coming. On May 30, the sun's rays will stream dramatically down the avenues of New York City's central borough. For New Yorkers used to sunsets hidden behind brick and steel canyons, it will be an awesome reminder of the sun's beauty and power.
When the sun puts its power on display, we often can't see it all or predict it in advance. But the effects can be world-changing.
The last truly massive display of Sol's power happened in 1859, when an invisible wave crashed into the Earth.