1. Mars rotated once every 20 days rather than once every 1.026 days? What would be different on the alternate Mars? 2. Search the Web for the latest information about proposed future missions to...

1. Mars rotated once every 20 days rather than once every 1.026 days? What would be different on the alternate Mars?

2. Search the Web for the latest information about proposed future missions to Venus. What scientific experiments will they carry? What scientific issues are these instruments intended to resolve?