There are dozens of cameras all over Britain pointing straight up at the night sky. Behind them, amateur astronomers are waiting and hoping to see moments of magic, and perhaps capture them on film. One of these devices was a CCTV camera stationed on top of the Museum for two years. It was scanning the darkness for shooting stars, and is just one of many similar cameras working together to document extraterrestrial activity. They are looking for meteors, the term given to space debris including dust, ice or rocks entering Earth's atmosphere. Behind the cameras is the UKMON network (United Kingdom Meteor Observation Network), a group of amateur astronomers documenting meteor activity over the UK.

The network's cameras detect a meteor's motion and record video clips, which are then analysed for basic information about the meteor. If a meteor is recorded from different locations around the country, astronomers can calculate its altitude, speed and orbit around the Sun. The St Patrick's Day fireball The Museum's camera is currently off, but there is a similar camera stationed at a school, as part of a Royal Society-funded outreach project. While the Museum's camera was working, it captured several spectacular sights, including the St Patrick's Day fireball on 17 March 2016. Fireballs are bigger and brighter than your average meteor, which can often be quite small. This one whizzed over the UK in the early hours of the morning and was picked up on eight cameras of the UKMON network, including one in Wilcot in Wiltshire, shown in the video below.



At its brightest, the light it gave off was comparable with the brightness of the full Moon, so it was also observed by the general public in the UK, the Netherlands, Belgium and France. Ashley King, a Museum planetary scientist, says, 'Fireballs tend to have a burst of light at one end that causes a white-out on camera. The Museum camera mostly captured that white light. 'The fireball probably came from cometary material. Because it was picked up by eight different cameras, we could then work out its direction and speed, and even where in the solar system it came from. 'It's amazing to know that this is the kind of thing we can do really quickly with these CCTV cameras.'