NASA has informed that an asteroid is going to pass Earth tonight, but its really harmless. The asteroid would be passing three times farther away than the moon, which is nearly 745,000 miles (1.2 million kilometers) from Earth Amateur and professional astronomers are preparing and all set to watch the flyby, which is to be visible between 8 pm EST Monday and 1 a.m. EST Tuesday (0100 to 0600 GMT Tuesday) from the Americas, Europe and Africa. According to astronomer Don Yeomans "It poses no threat to Earth but, it's a relatively close approach by a relatively large asteroid, so it provides us a unique opportunity to observe and learn more" An asteroid measures about a third of a mile (half a kilometer) in diameter. This asteroid, orbits the sun every 1.84 years, and was discovered 11 years ago by the Lincoln Near-Earth Asteroid Research, or LINEAR, telescope in New Mexico. Surprisingly, An object of that size hit the planet about 65 million years ago in what is now Mexico's Yucatan peninsula, triggering a global climate change that is believed to be responsible for the demise of the dinosaurs and many other forms of life on Earth. Scientists are eagerly waiting to learn new facts about this asteroid, as the information about this asteroid is equal to none.