The fantastic Space Museum in Two Point Museum lets you explore and activate beautiful astral anomalies, one of the most exciting of which is the Galactic Bulb.
The Galactic Bulb is an astral anomaly found in the Space Museum, Pebberley Height. Like every other anomaly, it needs specific celestial artifacts to activate it.
When you look closely at the Galactic Bulb, you shall find a number of symbols marked on it. The most notable symbols have triangles instead of sides and include a circle and an unusual S form.
Galactic Bulb In Two Point Museum
In activating the Galactic Bulb, three celestial cells bearing the right symbols will be adjusted into its influence area: two will be in triangle shape, and the last will be in circle shape.
The black symbols on an anomaly indicate what it needs, while blue symbols indicate what it can give after activation.

To obtain celestial cells, dig up meteors falling in your museum, send Space Experts on expeditions into Two Point Orbit, or complete space-themed expedition missions.
These don’t tend to be that rare, but the exact shapes you require may take a while to find. Diligently collect on each of your exotic adventures, and eventually, you will get what you need.
Activate The Galactic Bulb In the Point Museum
To activate the Galactic Bulb, you can start by examining it in a suitable place in your Space Museum. Then, place two triangle-shaped celestial cells and one circle-shaped celestial cell inside the radius of influence of the Galactic Bulb.
When you have all three cells in their respective locations, the anomaly will light up and confirm successful activation. Finally, access the activated Galactic Bulb to finish the procedure.

After activation, it gives out an S-shaped symbol as a reward. This becomes very important in your museum as it would help activate other anomalies.
The whole process could be compared to a train, as first, you activate the Galactic Bulb to get the S symbol, which is then followed by other basic shapes to activate the subsequent anomaly.
If you take expert advice, first set aside a portion of your museum devoted to working with anomalies and organize them into celestial cells by shape for ready access.
If you find an anomaly that asks for a symbol you do not possess, continue searching the new areas and expeditions.
Another option could be to train specialized Space Experts to improve expedition success rates and artifact yield. You can also experiment with Sandbox Mode without worrying about financial limitations for different setups.