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A broken rocket engine, a cracked astronaut helmet, a falling star, and a parachute are clustered together in a graphic style.

Space exploration has a price. Can you handle the heat of these expert quizzes?

Famous Astronomers & Astronauts

ZapStacks

5

Zaps

98

The O-rings failed, the heat shield cracked, and the clock stopped. Apollo 1, Challenger, Columbia—names etched in history for the highest stakes imaginable. Do you know the specifics of the moments when everything went wrong? Prove it. Step into the tension and reclaim the facts.

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ZapStacks

A space capsule, a star, a headset, and three frayed cables with connectors float against a gray background.
Apollo 1 Fire
20 Zaps · Hard
A stylized spacecraft is divided by a jagged, multi-colored vertical shape, with a sunburst pattern on the left and a mission emblem on the right.
Challenger Disaster
20 Zaps · Medium
A space shuttle, an astronaut helmet, and a circular mission patch are grouped together with a trail of stars.
Columbia Disaster
20 Zaps · Medium
A stylized orange space capsule with an astronaut looking out of a hatch, positioned below a striped parachute and next to a golden sun.
Soyuz 1
18 Zaps · Hard
A star chart, a mechanical valve, a spherical space capsule with a parachute, and a dark human silhouette.
Soyuz 11
20 Zaps · Hard

More ZapCores in Famous Astronomers & Astronauts

A geometric astronaut stands beside a lunar lander and a flag on a rocky surface.
An armillary sphere, sundial, telescope, and star chart are arranged with a small figure pointing upward.
A person in a lab coat stands next to a large satellite dish, surrounded by a spiral galaxy, a satellite, and a black hole diagram.
A stylized astronaut stands surrounded by a telescope, a space capsule, a rocket, and a celestial globe.