UFOScreenshot from ColdPyro's YouTube video

It is still not known if aliens and UFO (unidentified flying objects) really exist but reports of UFO sightings keep coming in. The latest we heard is that a bright object was spotted flying across the earth at great speed in Nasa's live video feed captured from International Space Station (ISS).

In the video footage captured from the ISS, a bright object is seen flying above the earth at a great speed but the live feed was stopped abruptly before it could cross the horizon. The screen turned blank and a statement appeared: "Please stand by. The High Definition Earth Viewing experiment is either switching cameras, or we are experiencing a temporary loss of signal with the International Space Station."

[READ: Two spacecraft flew past supermoon?]

The video has been uploaded on YouTube by ColdPyro.

Now, conspiracy theorists have claimed that Nasa had intentionally cut the live feed to cover up proof of aliens' existence. Some UFO hunters have even described the white speck as a "mysterious spacecraft."

UFO enthusiasts have alleged several times in the past that Nasa intentionally cut live feed from the ISS when mysterious objects appear in the skies.

Interestingly, two black objects were seen flying pass the supermoon at great speed in a video captured last week. UFO enthusiasts have claimed that the mysterious objects were spacecrafts while many viewers said that they could be birds, satellites or even balloons.