For the the last few decades Nasa has spent billions of dollars on a variety of missions to Mars to find out if the planet might once have been habitable. But has a YouTube blogger found evidence for past life on Mars in the form of a human face-like rock hidden in an old Nasa photo? The answer, of course, is an emphatic 'no', but that hasn't stopped the UFO enthusiast from suggesting that the rock may be a sign the planet was once inhabited. Scroll down for video Scott Waring claims he has found signs of life in an old Nasa photo (Mr Waring has highlighted the 'facial' features to the right). The image comes from the Washington-based agency's first rover on Mars, called Sojourner, which landed on Mars on 4 July 1997. In the image the rock seems to have a human-like appearance +4 Scott Waring claims he has found signs of life in an old Nasa photo (Mr Waring has highlighted the 'facial' features to the right). The image comes from the Washington-based agency's first rover on Mars, called Sojourner, which landed on Mars on 4 July 1997. In the image the rock seems to have a human-like appearance UFO sightings fan thinks there's an ancient statue face on Mars On his website UFO Sightings Daily Mr Waring says he has ‘found a new face’ on Mars. The discovery was seemingly made by the Sojourner rover on Mars back on 22 July 1997, but not unearthed by Mr Waring until now. In a video he expresses bafflement that Nasa has pointed out features on Mars, including the face, with arrows in the image. Read more: http://www.dailymail.co.uk/sciencetech/article-2825148/Mystery-face-Mars-UFO-blogger-finds-rock-resembles-head-old-Nasa-photo-claims-s-sign-past-life.html#ixzz3ITrZeSkh Follow us: @MailOnline on Twitter | DailyMail on Facebook