If you see a line of lights straddling along the night sky, then this might be the first set of Starlink satellites that SpaceX recently launched in order to provide internet coverage to the world. Marco Langbroek eagerly anticipated these low-orbit satellites and after making calculations, his location was close enough to view this satellite train.
He wrote on his blog:
On 24 May 2019 at 2:30 UT, SpaceX launched STARLINK, a series of 60 satellites that is the first launch of many that will create a large constellation of satellites meant to provide global internet access.
Just short of a day after the launch, near 22:55 UT on May 24, this resulted in a spectacular view over northwestern Europe, when a ‘train’ of bright satellites, all moving close together in a line, moved across the sky. It rained UFO reports as a result, and the press picked it up as well.
(Image credit: SpaceX/Starlink Mission; Wikimedia Commons)