Department of Energy Argonne National Laboratory Office of Science NEWTON's Homepage NEWTON's Homepage
NEWTON, Ask A Scientist!
NEWTON Home Page NEWTON Teachers Visit Our Archives Ask A Question How To Ask A Question Question of the Week Our Expert Scientists Volunteer at NEWTON! Frequently Asked Questions Referencing NEWTON About NEWTON About Ask A Scientist Education At Argonne Haley's Comet Heading to Chicago
Name: megan mccormack
Status: N/A
Age: N/A
Location: N/A
Country: N/A
Date: 1993 - 1999

When is the next time and how often does Haley's Comet pass over Chicago?

Halley's Comet (note spelling) has a period of 76 years. It last appeared in 1986.

Hopefully, when it "passes over" Chicago, it will also pass over the rest of the Earth.

BTW, the pronunciation of Sir Edmund Halley's last name is the same as mine: the "a" is pronounced as in "hall" although for many years it was common to hear it pronounced as in "hail"


Click here to return to the Astronomy Archives

NEWTON is an electronic community for Science, Math, and Computer Science K-12 Educators, sponsored and operated by Argonne National Laboratory's Educational Programs, Andrew Skipor, Ph.D., Head of Educational Programs.

For assistance with NEWTON contact a System Operator (, or at Argonne's Educational Programs

Educational Programs
Building 360
9700 S. Cass Ave.
Argonne, Illinois
60439-4845, USA
Update: June 2012
Weclome To Newton

Argonne National Laboratory