In The Day Mars Invaded Earth (1963) Sci-Fi classic movie, the Martians are not the invaders, they're the ones protecting themselves from us after a US space probe lands on their planet.
In 2020, after the colonization of the moon, three spaceships are launched from Lunar Station 7. They are to explore Venus under the command of Professor Hartman, but an asteroid collides and explodes Capella.