561 BCE

All eight solar system planets, including the now redefined dwarf planet Pluto, fall into planetary alignment. Croesus becomes king of Lydia (or 560 BC).

In the 560s BC, the 6th century BC.

Geopolitics & Diplomacy

  • Croesus becomes king of Lydia (or 560 BC).source

Science & Discovery

  • All eight solar system planets, including the now redefined dwarf planet Pluto, fall into planetary alignment.source

Deaths

  • Alyattes, king of Lydia (or 560 BC)source