The huge "potentially hazardous" asteroid 1998 OR2 is just a few weeks away from its close encounter with Earth, and you can watch the giant space rock's approach online or with a small telescope.While asteroid 1998 OR2 is large enough to wreak havoc on Earth if it were to strike our planet, it won't come anywhere near a collision when it flies by on April 29. "On April 29, asteroid 1998 OR2 will safely pass by 3.9 million miles/6.2 million kilometers," scientists with NASA's Asteroid Watch program said in a Twitter update as they debunked a Daily Express report...