The song reached No. 1 on the U.S. Billboard Hot 100 the second British
recording to reach No. 1 on that chart in the year, after “Stranger on the
Shore” in May, and was also a number one hit in the UK. It was the second 
instrumental single to hit No.1 on both the US and UK weekly charts. 

”Telstar” was named after the world’s first communication satellite which
was launched by the US earlier in the year  and proceeded the Beatles’
chart debut by 13 months.