A small asteroid about the size of a house is passing Earth, US space agency Nasa says. At its closest point, the asteroid 2014 RC passed over New Zealand at 18:18 GMT on Sunday. It is about 18m (60ft) wide. Nasa says it is about 40,000km (25,000 miles) away, and posed no danger to Earth. However, a meteorite that landed near the Nicaraguan capital Managua on Sunday could have come from the asteroid, experts there said. (BBC News)