Tuesday, October 27, 2026
Search

Space history timeline

Showing the 240s BCE. Show all decades

2 records

250s BCE

1 record

  1. 250 BCE

    1. 250 BCE to 200 BCE Date range ancient astronomy

      Chankillo’s towers and observation points served as a solar calendar in ancient Peru.

240s BCE

1 record

  1. 240 BCE

    1. 240 BCE Year only astronomical observation

      Chinese observations provide the first reliably recorded appearance of Halley’s Comet.

About New Space Economy

NSE is a comprehensive resource covering all aspects of the Space Economy. Since 2021, we have published over 8951 articles. New articles are published daily.

×