It looks like there's a doorway on Mars.

That has been the topic of internet discussion since NASA released a new picture taken by the Curiosity rover on Mars.

The intriguing image snapped by the explorer's Mast Camera on May 7 appears to show a cleanly-cut hole in a rock face.

There has been no official NASA statement about the sighting or the grainy image.

It looks like a doorway with an artificial wall, but many viewers are more practical, like one Reddit user who wrote, "It's obviously not a little door, it's just a flat piece of broken rock."

Coincidentally, a U.S. Congressional House subcommittee is set to hold an open hearing next Tuesday about UFOs—the first time the fascinating topic has been on the docket in over 50 years.

The US government released a report on documented cases of so-called ‘Unidentified Aerial Phenomena' (UAP) in Summer 2021. In it, the Director of National Intelligence examined 144 cases of UFOs, but could explain only one.

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