December 2020 Updates


Science Centre Observatory reopening

The Observatory at the Science Centre Singapore will be opened on 15th January 2021. It will have a limited capacity of 50 visitors. Each session will consist of a digital planetarium show as well as a stargazing session. Book your tickets now!

For more information, visit

Talks and events

Webinar with ex-NASA Scientist

Join the Physics society webinar to find out more about the commercial Space sector, opinions on space exploration, and more. For registration, head over to

Date: Saturday, 12th Dec 2020, 10am

Singapore Space Challenge Webinar

Join the meet-the-expert webinar session conducted in conjunction with the Singapore Space challenge. Find out more at

Dates: 14th-18th Dec 2020

SCObservatory talks

Stay tuned to astronomy-related content as well as the Astronomy 102 live series conducted by SCObservatory at

What’s up in the Sky?

Above the North this month, flanked by her saviours, Pegasus and Perseus, is Andromeda, daughter of Cepheus, with her mother Cassiopeia closer to the Horizon.

While being a small constellation, Andromeda is well-positioned – it is right next to both of our galaxy’s large neighbours, Andromeda Galaxy (M31), the brightest spiral galaxy in the sky, and Triangulum Galaxy (M33) a bright spiral galaxy in its own right. One can find these galaxies by extending both ends of the line connecting Mirach and μ Andromedae, with Andromeda Galaxy being the one further west and closer to the horizon than its counterpart. Beside Andromeda is a smaller constellation, Triangulum, which is useful for finding NGC 752 (Caldwell 28) between Almaak and Mothallah. Thereafter, M34, the Spiral Cluster, can be found by extending a line from Mothallah through β Trianguli.

Below Andromeda and Triangulum, are the constellations of Perseus and Cassiopeia, home to a dearth of deep sky objects. Pacman Nebula (NGC 281) can be found by tracing the line from Shedir to Mirphak. The Owl Cluster (Caldwell 13) can be found between Caph and Mirphak. The Double Cluster (Caldwell 14), a favourite for amateur astronomers and approximately the location where the Perseid meteor shower originates, can be found between Ruchbah and Mirphak. By extending a line through Navi (γ Cas) from Caph, one can find NGC 129, an open cluster, both the γ Cassiopeiae nebulae (IC 59, reflection and IC 63, emission) as well as the open clusters M103, NGC 663 (Caldwell 10) and NGC 654.

Finally, by extending the line further, one can find the famous Heart and Soul Nebulae. Lastly, the Sailboat Cluster (NGC 225) can be found west of Navi. Caroline’s Rose, an open cluster, (NGC 7789) can be found north-west of Caph.

Find out more about this month’s night sky with the following handy resource:

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