Two major UFO sightings have hit the news in the past two days, one from outside Earth, and the other, just above a crop circle in England.

NASA's Curiosity rover captured images of a strange white light, notably moving across the horizon of the planet Mars.

In a report by Huffington Post, video analyst Marc Dantonio said the strange light merely signified "dead pixels." UFO observers, on the other hand, are more inclined to believe that aliens are watching Curiosity as it makes its progress on the Martian soil.

YouTube user weigreg posted the NASA clip with the following description:

This video was posted on the website of NASA www.nasa.gov. few minutes later was removed. In this video you can see an unidentified object in front of the lens going through "curiosity."

UFO above a crop circle - first time

Meanwhile, YouTube user popaloopa from Avebury, England, managed to film a strange aircraft flying in strange velocity above a crop circle.

Crop circles have long been associated to alien life forms, and popaloopa's video is perhaps the first of its kind in terms of combing a UFO and a crop circle in a frame.

The video uploader gave the following remarks on his clip's YouTube page:

"Please note, although the length of time that you see the object is brief, before I got to my video camera to start filming it was glowing incredibly brightly. Like someone in the sky was shining a dazzlingly bright torch. It was unreal."

Popaloopa's conversations with companions while filming the sighting render thrill and excitement to the sighting.

In one of his responses to comments, Popaloopa further described what he saw:

"I believe this may be the only video in existence of a UFO, displaying above a crop circle with multiple independent witnesses. Before I reached my camera the object was lit up like a torch being shone through a crystal. To the naked eye, it sparkled intensely."

Do you think the two were legitimate UFO sightings? Watch the videos to see for yourself.