This Day in History

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This Day in History
Brightest Supernova in Recorded History Appears in Night Sky (1006)
One thousand seven years ago, observers in China, Egypt, Iraq, Japan, and Switzerland recorded a new object in the sky. It was hard to miss. Scientists now believe SN 1006 was the brightest supernova in recorded human history. It was described by ancient astronomers as being low on the horizon but shining about half or a quarter as bright as the Moon. It could sometimes be seen during daylight hours and may have been bright enough to read by at night. How far was it from Earth?

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This Day in History

This Day in History
Mountainside Collapses on Town in Alberta, Canada (1903)
Before dawn on April 29, 1903, millions of tons of limestone tumbled from the face of Alberta’s Turtle Mountain onto the valley below, burying several buildings on the outskirts of the coal mining town of Frank. Though dozens were killed, only a handful of bodies were recovered from the debris. Scientists believe the slide was caused by a number of factors and speculate that another slide will likely occur. What legends about the slide arose in its aftermath and continue to persist today?