text: These are a couple of reasons why I think the use of technology to read peoples emotional expressions isn't valuable to know how someone is feeling.  Venus id the closes planet to Earth in terms of density and size, and occasionally the closest in distamce too. Earth, Venus, and Mars, our other times to Venis. Bacause Venus is somentimes right atound the corner- in space terms-humans have sent numerous spacecraft to land on this cloud-draped world.