Astronaut Leroy Chiao witnessed UFOs during a spacewalk outside of the International Space Station (ISS) back in 2005. The pioneering astronaut, who served as commander of the ISS nine years ago, finally speaks up on the UFO sighting that he experienced.

© Science Chanel A recreation of the incident
From October 2004 to April 2005, Leroy Chiao stayed at the International Space Station to carry out a space mission. According to the Liberty Voice report, the astronaut took a stroll outside of the ISS with Russian cosmonaut Salizhan Sharipov to install the navigational antennas at 230 miles above the Earth and 17,000 miles per hour speed.

It was at that time when Leroy Chiao noticed some lights flew by at a faster speed. "I saw some lights that seemed to be in a line and it was almost like an upside-down check mark, and I saw them fly by and thought it was awfully strange," Mr Chiao recounted to The Huffington Post.

Did Mr Chiao's Russian colleague saw the lights that went by them? The answer is he was not able to because he was looking at the opposite direction.

According to the theory that has been offered for the astronaut's UFO sightings outside of the ISS, the lights that Mr Chiao saw came from the bright lights of a fishing boat located at hundreds of miles beneath him. It is more convincing to hear that the astronaut saw a spacecraft at that time but Mr Chiao revealed that he does not believe there has been any substantial evidence proving a controlled spacecraft visited planet Earth.

"I'm skeptical of claims that we've been visited by aliens from another planet or other dimension, but I don't rule it out 100 percent. I have an open mind and I do believe there's other life in the universe. If there is life out there that's so much more advanced than we are and they know either how to travel great distances in short amounts of time, or they're able to come from a parallel universe into ours, why don't they just come and show themselves?" the astronaut explained.

In the Malaysian Digest report, an upcoming program on the Science Channel will be featuring astronaut Leroy Chiao's UFO sighting experience as one of the numerous stories to be told. The UFO sighting outside of the ISS launches the program "NASA's Unexplained Files" as part of the Science Channel's "Are We Alone?" week-long series that commenced on Sunday, March 2.