Oumuamua Asteroid Science Space Most Beautiful Picture December 2, 2017 Spread the love An artist’s impression of the Oumuamua asteroid, which astronomers believe is about 730 metres long by 73 metres wide. It was discovered in October, zipping through our solar system at 64,000 kilometers per hour. Source: M. Kornmesser, European Southern Observatory, Agence France-Presse Spread the love