The photo is undoubtedly an odd shadow, but it appears to show an astronaut working on the Curiosity rover. It was snapped by one of the onboard cameras, and has set the conspiracy theorists and "UFO experts" abuzz.
Conspiracy theorists have previously expressed their belief that Mars is the ‘off-world’ base of the Pentagon’s ‘Non-Terrestrial Officers’.
The claims are also supported by classified documents reportedly obtained by Gary McKinnon, a hacker who faced extradition to the United States after committing the ‘biggest military computer hack of all time’ in 2002.
McKinnon, a Scotsman, allegedly managed this feat using a dial-up connection at his home. Of course, back then dial-up was still the most widely-used means of accessing the internet, but given the slow speeds available, it seems unlikely that his "intrusion" - if it occurred - could have amounted to much.
Apparently lacking any news to report, U.K. media's all over the "story". It may come as a surprise to them to find that Curiosity was not launched in 2011, but recently marked its eleven-year anniversary of operation on the planet. Not bad, since it was expected to last three months.
If in fact there are aliens on the planet, it's safe to say that they're not there legally, and are only there to collect benefits.