UF... Oh that's what they are! Chain of Elon Musk's Starlink satellites cause a stir as they streak through the skies of western Europe in dazzling display

Amazed sky-gazers saw Elon Musk's Starlink satellites pass over Europe tonight. 

Starlink is the informal name for Musk's Space X's project. It plans to create a constellation of thousands of low-orbit small satellites to improve internet service.    

The video shows a line of the satellites trailing through the sky and many have expressed their amazement on Twitter. 

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Elon Musk created Starlink, which is the informal name for Musk's Space X's project. It plans to create a constellation of thousands of low-orbit small satellites to improve internet service

Astronomers have slammed the billionaire for the project which they claim is 'a crime against humanity'. 

They think the satellites are getting in the way of scientific observations and make it difficult for them to view the night sky as they reflect light. 

They can interfere with the technology experts use to see distant phenomena, which is ground-based radio telescopes. 

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The string of lights could be seen travelling through the sky across western Europe

On Twitter tonight users in western Europe expressed how amazed they were, with many comparing the string of lights to Christmas and Santa. 

Others deemed it a 'total blot on the skyline' and expressed their sympathy for astronomers. 

Social media users in Colorado posted photos on March 7 after spotting the row of lights moving slowly through the sky. 

Some Twitter users were excited about Elon Musk's string of satellites and said how amazing it was to see it. Others compared the event to Christmas and seeing Santa Claus in the sky 

Another Twitter user said it was a 'total blot on the skyline' while another expressed his sympathy for astronomers who have said the satellites are interfering with their work