An intriguing science-fiction film though rather disjointed, but there is a good reason for that. The film is originally the Soviet film Planeta Bur which was been edited and dubbed into English. Basil Rathbone was bought in to film some scenes from a moon base and Faith Domergue scenes from a space ship.
Despite all of that, this is a pretty decent example of space exploration as the man reaches Venus for the first time and discovers a planet inhabited by dangerous plants and violent reptiles. The explorers, which include Gennadi Vernov and Georgi Zhzhyonov, get into a variety of scrapes as they explore the planet.
The visuals are frequently impressive, although of course dated now they have the required strange other worldly feel. The film does have a number of problems though, the dubbed dialogue is often quite strange in order to match the original Russian lip movements, because of that it sometimes isn't quite clear what is going on. Rathbone and Domergue don't really add anything to the film, it is pretty obvious they are tacked onto the action. However the film has plenty to enjoy.