This event is sponsored by the Harvard College Observatory. The HCO sponsors a variety of free programs for the public. Among these events are Observatory Nights, typically held on the last Thursday of select months, but may be subject to change. Observatory Nights feature two 15-minute non-technical lectures, and telescopic observing from the observatory roof if weather permits. The lectures are intended for high-school age and older audiences, but children are welcome. Admission is free, however, tickets are limited, and seating is first-come, first-served.

These events are held in Phillips Auditorium (at the rear of the HCO complex near Madison Street and the large parking lot), 60 Garden Street, Cambridge, about 1 mile west of Harvard Square. Parking lots marked for Observatory Staff are open to the public on event nights. Parking is free.

Please check the HCO events website (https://hco.cfa.harvard.edu/news-events/) for details.