keywords: spaceship siberia asteroids russian alien
text: Russian Alien Spaceship Claims Raise Eyebrows, Skepticism (SPACE.com) SPACE.com - An expedition of Russian researchers claims to have found evidence that an \  alien spaceship had something to do with a huge explosion over Siberia in 1908. \  Experts in asteroids and comets have long said the massive blast was caused \  by a space rock.