More from Magellan the mapmaker

VenusNASA’s Magellan space probe, which has been mapping the planet Venus from orbit since September 1990, completes the first phase of its map-making mission, completing radar imaging of more than 80% of the planet’s surface. NASA authorizes an extended mission, lasting into 1992, which will yield a more complete map of the Venusian surface, including its polar regions.