Rock music fans have been enjoying the songs of U2 since way back in 1980!

In the four decades since, they've had countless hits, including songs like "Beautiful Day" and "Where the Streets Have No Name." But there are some facts about the Irish rockers that are lesser known to even their biggest fans.

Facts About U2

In this video, we're breaking down five things you probably never knew about U2, from the band name to Bono's and The Edge's nicknames and even the members' famous relatives.

Celebrity Corner With Sarah: Facts You Didn't Know About U2

Watch the video above for five little-known facts about U2. You can also see what frontman Bono has been up to in recent years here.