An asteroid wider than nine ocean liners sailed safely past Earth today (May 31), making its closest flyby of our planet for at least the next 200 years. Asteroid 1998 QE2, which is about 1.7 miles (2.7 kilometers) wide, cruised within 3.6 million miles (5.8 million km) of Earth at 4:59 p.m. EDT (2059 GMT)…