Greek astronomers Sun wandering planet weekday names

Ancient Greeks counted the Sun as a planet

Over the year, the Sun appears from Earth to move through the zodiac, so Greek astronomers grouped it with the seven “wandering” planets. Roman-era weekday names still preserve that ancient grouping.

The 2008 financial crisis included a bank run without people lining up at banks

Traditional bank runs happen when depositors rush to withdraw cash. In 2008, a similar panic spread through short-term wholesale funding markets. Financial institutions stopped renewing loans or demanded more collateral, forcing borrowers to sell assets quickly. The run happened largely between firms rather than at bank counters.

Even bacteria can show signs of aging

Bacteria reproduce by splitting into new cells, so they were once thought to be potentially immortal under good conditions. But researchers have found signs of aging in E. coli, including changes that can eventually lead to death.

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Greek astronomers Sun wandering planet weekday names

Ancient Greeks counted the Sun as a planet

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