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Nicole Kidman and Keith Urban camp in back garden

Nicole Kidman and Keith Urban camp in back garden

Keith Urban and Nicole Kidman camp in their back garden.

The 49-year-old actress bought the 'Cop Car' hitmaker a brand new telescope for his 49th birthday last month, while their daughters Sunday, eight and Faith, six, gave him a tent.

Speaking to E! News, Nicole said: "He got the telescope from me, and he also got a tent to go camping in the backyard from the girls. We camped in the backyard. We slept in the tent and then we go into the house half way through the night.

"We tried. It gets cold and the girls were like, 'It's too cold can we go inside.' I like that they are happy to give it a shot."

The couple - who got married in 2006 - have been subject to split rumours in recent months as the country crooner is currently touring the United States with his new album 'Ripcord'.

He will then head on to Zealand and Australia next month to finish off but, despite the distance standing in their way, their love can withstand it because they speak every night.

Speaking on 'The Today Show', he explained: "It does [annoy me], I want to live our life together, and the fact we live somewhere where we're not being photographed all the time - it makes it possible for people to make up that stuff because you're not always there to defend it.

"We just get on with living our lives. I call her in the encore every single night. I just say hi and tell her how the show was."

However, although they're regularly pulled apart for work, Keith believes the secret to their happy marriage is spending as much time as possible together when they do get to be together.

He said: "We're best friends and we love doing everything together - we're the priority. Everything else comes after that."