Chicagohenge on Monday.
Chicagohenge on Monday. David Schaper / NPR
Chicagohenge on Monday.
Chicagohenge on Monday. David Schaper / NPR

This Tuesday, March 19, isn’t just Primary Day in Illinois — it’s also the best day to experience the phenomenon known as “Chicagohenge.”

Reset checks in with the Adler Planetarium for what you need to know about Chicagohenge, where best to see the spectacle and whether it can really be considered a “henge” at all.

GUEST: Geza Gyuk, director of astronomy, Adler Planetarium

Chicagohenge on Monday.
Chicagohenge on Monday. David Schaper / NPR
Chicagohenge on Monday.
Chicagohenge on Monday. David Schaper / NPR

This Tuesday, March 19, isn’t just Primary Day in Illinois — it’s also the best day to experience the phenomenon known as “Chicagohenge.”

Reset checks in with the Adler Planetarium for what you need to know about Chicagohenge, where best to see the spectacle and whether it can really be considered a “henge” at all.

GUEST: Geza Gyuk, director of astronomy, Adler Planetarium