A blue moon is a rare event that usually occurs every two or three years, and tonight (August 19), people in the UK have the opportunity to witness this phenomenon in the night sky.
According to the Royal Museums Greenwich (RMG), the definition of a blue moon can vary, but traditionally it is considered to be the third full moon in an astronomical season containing four full moons. This can be quite confusing for those following the standard calendar, as astronomical seasons are based on equinoxes and solstices.
For those interested in seeing the blue moon tonight in the UK, it is important to note that this is a seasonal blue moon, which is the third full moon in an astronomical season containing four full moons.
TimeOut provides some tips on how to view the blue moon tonight, suggesting that clear skies make it easier to see the moon. Therefore, it is recommended to head to areas with less light pollution and away from buildings that may obstruct the view. While no special equipment is needed to observe the blue moon, using a telescope or binoculars can enhance the viewing experience.
Stonehenge UK shared on Twitter that the blue moon will be visible from 8.45pm on Monday, August 19, providing a unique opportunity for sky gazers to witness this rare event.
Contrary to its name, the blue moon is not actually blue in colour. According to RMG, blue moons typically appear the same colour as any other full moon, except in rare circumstances such as during a lunar eclipse when the moon can appear red. Another rare occurrence is when the moon appears blue due to dust particles in the Earth’s atmosphere, possibly from a volcanic eruption.
The next blue moon after tonight’s event is expected to take place on May 31, 2026, when a monthly blue moon (the second full moon in a month) will be visible.
Overall, the blue moon sighting tonight presents a unique opportunity for people in the UK to witness this celestial event and marvel at the beauty of the night sky. Remember to look up and enjoy this rare occurrence that only happens every few years.