Quoting: Anonymous Coward 1530595
Thanks AC 1530595 this gave me a clue, but of course I'm probably wrong.
Working on the clues given
The movie Knowing was about ET's coming and taking people to save humankind from an ELE.
The movie seemed to show it as meteors hitting the Earth at first but having seen your link about the crab nebulae I think it may be the after affects of a Gamma Ray Burst.
The crab nebula is a remnant Super Nova that was seen exploding in 1054. That means the light has already travelled the 6500 light years to get here.
If that Super Nova was followed by a single or series of gamma ray bursts they are heading our way now.
Another clue was the Capricorn star sign. The dates for this star sign are 22 December to 19th January.
Interesting it commences the day after the end date of the Mayan calendar. Some say that the 21st is the end of the world whilst others say it is a new beginning. The movie seems to indicate both.
Even though we humans don't know much, our scientists say that a gamma ray burst wouldn't burn the earth like that but it could destroy 25% of our protective Ozone layer & affect our magnetosphere. Thus our own sun could cause our destruction, via CME's or Solar Flares once our defenses are down.
The movie Knowing ends with the kids being transported to a new planet. landing in a crop circle and then running off to the Tree of Life, in pairs reminiscent of the Adam and Eve story.
Even though the majority of humankind dies, the ET's ensure that we continue on a new world.