Certain elements on the surface emitted X-rays when the sun zapped Eros with an intense burst of radiation for 30 minutes on May 4.
CNN: Asteroid Eros resembles 'building blocks' of Earth
In an article headlined " 'Aliens exist' say real-life X-Files, " the London tabloid The Sun said the memo appeared to back the claim that extraterrestrials landed in Roswell, New Mexico.
CNN: FBI's 'flying saucers' online memo intrigues public
When the sun is in this state, it also sends less energy out in the soft X-ray and extreme ultraviolet parts of its spectrum.
MSN: Earth's upper atmosphere cooling dramatically
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