Observatory Unlocked

ROG Opening Times

Important Notice for the 31 December: The Royal Observatory North (Flamsteed House) and Meridian Line will open to the public at the later time of 11:30. The Astronomy Centre and Planetarium will open as normal at 10:00.

Essential information

Event type: 
Date and time: 
Weekends and holiday weekdays | 1.05–4.15pm
Admission: 
Ticketed
Location: 
Royal Observatory, Meridian Courtyard
Free to members

Drop by and chat with our Observatory Explainers who are bringing the history of astronomy to life.

Please note that Observatory Unlocked will not be running on Sunday November 4th. 

Enjoy a range of public talks and activities delivered by our Observatory Explainers, ranging from short talks on the hidden stories of the Royal Observatory, Greenwich, to solar observing and hands on science demonstrations.

Our team of Observatory Explainers can answer your burning questions about astronomy such as: why do we need dark matter to explain the universe and how do astronomers know that space is expanding?

Also, if you've always wondered what is involved in modern astronomy research compared to the historic research that took place at the Royal Observatory, then they are the people to ask.

Age: 7+