Ok... Laugh! These were scary. I was "young" during these movies! But remember, the year was 1955 and these were real possibilities because science was advancing so fast! We just saw satellites become real and now Monsters from the Atomic Bombs which we created! This is real stuff!
We would go to the Thrifty Drug Store and get 4 cent candy bars bigger than ANY today and go to the movies all Saturday.... double features with cartoon for 75 cents!!!
The theater was in Culver City... we rode about 3 miles on our bikes to get there! And if we had extra money, we would sit in the loges (soft high backed seats!)
1957 - The first spaceship to visit Venus crash lands in the sea, freeing a small native Venusian creature called the Ymir. Eventually growing to enormous size, it threatens the city of Rome
1957 - People are trapped on a shrinking island by intelligent, brain-eating giant crabs. Roger Corman directs
1956 - An expedition is sent from Earth to Altair in the constellation of Aquilae (some 17 light years from Earth) to discover what happened to a colony of settlers on its fourth planet, Altair-4. What they discover is how and why an alien race of geniuses destroyed itself overnight while leaving their technology intact at some point in the distant, distant past. Still a great movie! I will never forget the Krill and the meters on the wall indicating the energy they needed to break through the largest and strongest door in the world!
1954 - Nuclear tests in the desert result in the growth of gigantic mutant ants who menace cities in the American south-west as a team of investigators and the army search for a way to control their spread in this Cold War-era monster film. NOT second rate: Look at the credits carefully!