An asteroid is on course to make a close approach to Earth, but scientists have ruled out a collision.
US space agency NASA says the asteroid will be closest to Earth on Friday at 19:25 UTC.
The asteroid, called 2012DA14, is estimated to be 45 meters in diameter and weigh 130,000 tons.
NASA says it will be about 27,700 kilometers from Earth, inside the orbits of weather satellites. Its speed is estimated at 7.8 kilometers per second.
The approach is unlikely to affect the International Space Station.
Scientists say the asteroid is too dark to see with the naked eye, but that people in Japan can watch it travel southwest to west early Saturday morning local time by using binoculars or telescopes.
The deputy head of Japan's National Astronomical Observatory, Junichi Watanabe, says the pass is a very important chance for researchers.
NASA says the asteroid revolves around the Sun about once a year. The agency says asteroids of similar size come as close once in 40 years or so, and collide with Earth once every 1,200 years.
In 1908, an asteroid entered the atmosphere and caused a huge explosion over Siberia, knocking down trees in a 20-kilometer radius.
Scientists say an asteroid several kilometers in diameter crashed near Mexico's Yucatan Peninsula 65 million years ago, causing climate change that led to the extinction of dinosaurs.
Well that is depressing.
One question; as to where Dianne got her info from? She said 17,000 miles, where as the experts are saying 27,700 miles.
Which is it?
That, and it is funny that a Spanish Dentist found it before the billion dollar Space Agencies across the Globe found it.
Reminds me of Billy Bob's comment in Armageddon, "it's a big A sky".