Open House Events

Director Colin Lonsdale speaking at a Haystack Open House
Former director Colin Lonsdale (photo credit: Ann Ringwood, Westford Eagle)

MIT Haystack Observatory holds public Open House events twice a year, generally on the third Thursday in May and October. See the form below to sign up for information and notifications of the next Open House (Fall 2024).

At the Open House, Haystack scientists,  engineers, and science staff explain how we explore the universe by studying radio waves. We offer demonstrations suitable for all ages and levels of knowledge. There is no charge for admission.


Please be aware that there are many more people interested in attending than we have space to accommodate, and the limited number of tickets will be claimed very quickly.

If you’d like to visit Haystack for our next Open House and learn more about our research, please fill out this form, and we’ll add you to the invitation list. You will receive an invitation before the Open House, and you must RSVP according to the instructions in the invitation to receive a ticket. (Please RSVP quickly as the Open House tickets—which are free!—go quickly and tickets are not guaranteed for everyone who receives the invitation.)

Haystack Open House sign-up form

Please note: completing this form adds your name to the list of invitations. Invitations will be sent via EventBrite, a month before each Open House. You must RSVP when you receive the invitation to receive a ticket! Tickets are free and go quickly.

Open House invitation signup list

Column 1

Column 2

Ticket requests