Trapped Between Two Worlds! by Steve Ditko (1959)

Strange Tales #67, Marvel Comics, by Steve Ditko

Worldwide Adventures in Science!

Tales of The Unexpected #14, 1957, DC Comics

The Snows of Mars! (1953) by Bernie Krigstein

Strange Adventures #33, 1954, DC Comics,

by Sid Gerson & Bernie Krigstein

The World Wrecker (1954) by Otto Binder & Carmine Infantino.

Strange Adventures # 50, DC Comics, by Otto Binder and Carmine Infantino. It's always great to see Carmine inking his own pencils!

Mercury

From Space Plasma

The Last Humans! (1952) by Broome, Oksner & Sachs

Strange Adventures # 27, DC Comics, 1952, by John Broome, Bob Oksner, & Bernard Sachs

Professor Brainstorm: The Time Machine

Strange Adventures #8, 1951, by Hi Mankin

The Mind Monster by Murphy Anderson (1954)

Strange Adventures #40, 1954, DC Comics

The Sun

From Space Plasma

Operation Luna by Virgil Finlay

Real Fact Comics #8, Art by Virgil Finlay