外星人将占领地球?

For extraterrestrials notoriously shy about making their presence known to Earthlings, they have been making more and more appearances in home videos over the past six months.

Note: extraterrestrial--ET is the abbreviation for extraterrestrial, which means alien creature.

One of the most famous was the UFO that appeared over the Dome of the Rock, an Islamic shrine in Jerusalem, on January 28. Discovery News writer Ian O’Neill published one of the first analyses of the video (based in part on my own investigation), demonstrating that it was "almost certainly a hoax."

A more comprehensive analysis by the Mutual UFO Network (MUFON), one of the oldest, largest, and most respected UFO investigation organizations in the world, also later concluded that it was faked.

A few months later, on April 21, another 'alien' home video surfaced. This one, allegedly taken in Russia, showed two young men finding an alien body on a rural, snowy farm. It, too, was soon revealed to be a hoax.

Note：hoax--A hoax is a deliberately fabricated falsehood made to masquerade as truth. It is distinguishable from errors in observation or judgment, or rumors and urban legends that are passed along in good faith by believers or as jokes.

Now, right on schedule, comes yet another UFO home video, this one taken in London, England. According to a report in the Daily Mail: "In the video, the cameraman runs towards the corner of Bolsover Street and Clipstone Street where two other men are already standing, gazing skywards, one of whom is using a mobile phone camera. As the camera is pointed upwards, over the BBC's Yalding House, three white dots flash across the sky at great speed in a triangle formation, they are very quickly followed by two similar sized white dots. As the camera pans down again, two people on the opposite side of the road can also been seen watching events unfold above them. Then one larger, bright and more slow moving disc-shaped white object appears, circles around briefly and zips off."

The video, one of at least two similar videos, was posted to YouTube last week and soon went viral over the Web, stirring interest and controversy among believers and skeptics alike.

Though evidence may eventually validate the video, a preliminary analysis strongly suggests that this video, like the others, is a hoax. For one thing, it's not clear who shot the video, or even when; anonymous eyewitnesses are a red flag.

Note:a red flag--Ameircan slang. It means "a bit sign" or "an indication", which reveals that something is not like what it seems to be.

Furthermore, the UFOs (like the one that appeared in the hoaxed Jerusalem video) are very easy to fake with video-editing software, mere spots of light without structure or detail.

Adding fuel for the skeptical grist, it seems that no one else on the busy London street near the British Broadcasting Building saw the many bright glowing objects in the sky. Logic suggests that there would have been thousands of eyewitnesses, yet the cameraman captured an event that apparently no one else saw.

ANALYSIS: New Zealand Government Opens UFO Files

It's also suspicious that though the video shows others recording the amazing event, no other photos or videos from the same angle have surfaced. Surely one of the other UFO eyewitnesses present (and seen in the video) would have come forward in the past weeks to sell their own photographs or videos to a newspaper or television station -- perhaps the BBC would be interested, since it occurred above their building.

Note:angle--angle is different from angel, the former means "view", the latter is the opposite of devil.

Faked UFO videos may be fun for hoaxers (or as viral marketing), but even many people firmly convinced that UFOs are real are getting tired of the hoaxes. After all, how will we know when the real UFO videos surface? No one likes to be fooled, and the best preventative is to examine all the evidence with a sense of history and a skeptical eye.