List of spaceflight records - Wikipedia
Why did we stop going to the Moon? | Royal Museums Greenwich
What's holding humans back in space travel? | BBC Sky at Night Magazine
Space exploration | History, Definition, & Facts | Britannica
The human body in space: Distinguishing fact from fiction - Science in the News
How fast could humans travel safely through space? - BBC Future
How Far Have We Traveled in Space - Space Quotations
How Space Travel Tries to Kill You and Make You Ugly | WIRED
What Is The Farthest Humans Have Traveled In Space? - WorldAtlas
How Long Have Humans Been On Earth? - Universe Today
How Far from Earth can Humans Travel into Space? - QS Study
What Happens to the Human Body in Space<span class="u-ffHind">?</span> | JAXA Human Spaceflight Technology Directorate
What is the maximum distance humans have reached from earth? - Quora
How long does it take to get to Mars? | Space
Humans vs. Robots: Who Should Dominate Space Exploration? | WIRED
A history of human space travel: Here's what we've achieved since the first trip into space
How Far Have We Been Into Space? - YouTube
How Far Have We Explored into Space?
What would happen to the human body in the vacuum of space? | Live Science
Farthest man in space: How far have humans gone in space?
NASA's Journey to Mars | NASA
Here's How Far Humans Have Sent Spacecraft In Space - YouTube
Humans Will Likely Not Have Ability to Visit Nearby Exoplanets Anytime Soon, Expert Says | Sci.News
Scott Kelly Spent a Year in Orbit. His Body Is Not Quite the Same. - The New York Times
