Cosmic Clock — Major Meteor Impacts vs. People & Climate

Click a meteor event to see its location, age/dating (including radiocarbon where available), and an inferred seasonal “cosmic clock” from its latitude and date.

Note: many events are dated by radiometric methods (Ar–Ar, U–Pb, etc.). Radiocarbon is only possible for the last ~50,000 years, so those fields are blank for most very ancient impacts.

☄️ Impact Events

Event Scale Location Lat Lon Date / Age

🧭 Cosmic Clock & Effects

Select an impact on the left to see:

  • Lat/long, hemisphere, and latitude band (cosmic clock position)
  • Best available age / dating method (radiocarbon where possible)
  • Whether it changed global climate or just the local area
  • Evidence of impacts on cities, cultures, or living populations