CNN19980312.2130.0299 NEWS CAPTION Everyone on earth can breathe a collective Sigh of relief. After examining 8-year-old photos, NaSA scientists say A mile-wide asteroid headed in our direction, won't hit us after all. And by seeing where the asteroid was back in 1990 and combining it with the 90 days of observations we have since it was discovered last December, we can now refine the orbit and we find it's going to miss it a lot more than 600,000 miles. Whatever it is it is expected to make it in 30 years. An astronomer at the international astronomical union said, yesterday, the asteroid would pass within 26,000 miles of the earth's center. And another said if it did it would have exploded with the size of atomic bombs.