Creature Double Feature Roundup
The Phantom Planet (1961)

After an invisible asteroid draws an astronaut and his ship to its surface, he is miniaturized by the phantom planet's exotic atmosphere.
Queen of Blood (1966) a.k.a. Planet of Blood

In the year 1990 an alien ship crashlands on Mars. Earth sends a rescue ship and finds a surviving green female. On the return trip to Earth, the crew begin to die, drained of their blood.