Two hefty asteroids pass close to Earth

Two hefty asteroids passed close to Earth last Wednesday. At least five are more set to swing near by January's end, but none are dinosaur-killers, scientists who track them said. One of Wednesday's close-approaching asteroids measured between .6 and 1.8 miles in diameter, a big enough space rock to cause catastrophe if it collided with Earth. But asteroid 7341 1991 VK got no closer than 7 million miles, nearly 24 times the distance from the Earth to the Moon.