This is where the end of the world begins.
Chinese want to capture an asteroid into Earth's orbit:
At first glance, nudging an asteroid closer to Earth seems like one of those "what could possible go wrong" scenarios that we generally try and avoid, and for good reason: large asteroid impacts are bad times. The Chinese, though, seem fairly optimistic that they could tweak the orbit of a near-Earth asteroid by just enough (a change in velocity of only about 1,300 feet-per-second or so) to get it to temporarily enter Earth orbit at about twice the distance as the Moon. The orbit would be unstable, and eventually (after a few years) the asteroid would head back out into space from whence it came, but it would stick there long enough for us to poke around on it.</p>