Mark Rober
The former NASA engineer turns everyday questions into big, short experiments: crushing eggs by hand, roller-coaster blackouts and wild engineering tests.
What it is
This is the TikTok of Mark Rober, the former NASA engineer turned YouTuber. His bio puts it simply: former NASA engineer, current YouTuber and friend of science. The account is verified and sits at around 4 million followers. It's where the short cuts of his big experiments land: things get dropped, crushed, launched, hacked and tested to see what actually happens.
Everything is in English, and most clips work even with the sound off, because the experiment is right there in the frame.
Why we picked it
Mark has a knack for turning an everyday question into a proper experiment. Why do people pass out on roller coasters? Can you crush an egg with your bare hands? Could a baby monitor help someone steal a car? Each clip opens with the question and closes with an answer you actually remember, because you watched it happen.
The account is active: new videos drop several times a month, the latest at the end of September 2026. The pinned section still holds older hits with millions of views, including the Craigslist piano that bounces all the way to the ceiling. Fair warning: some clips carry sponsor plugs or promote his own CrunchLabs kits. It doesn't get in the way, but it's there.
Where to start
- "How to Crush an Egg With Your Bare Hands" — why eggs are so strong and how to beat one anyway.
- "Why Do People Pass Out On Roller Coasters?" — g-forces and your body, explained quickly.
- "I Discovered a Lost Plane" — the hunt for a missing aircraft.
- "Lowest Heart Rate Wins!" — a calm-off with Dude Perfect, Preston and Brianna.
- The pinned piano video, a classic of the account.
Who it's for
Anyone who likes science in "let's just test it" mode. Parents looking for something they and their kids will both enjoy watching. Engineers and the generally curious, since Mark explains things clearly without dumbing them down into something untrue. And if you already follow his long YouTube videos, this is the bite-sized version.
Quick answers
Who is Mark Rober? A former NASA engineer, now a YouTuber and the founder of CrunchLabs, as he describes himself on his profiles.
How often does he post? Several times a month; the most recent video went up on September 30, 2026.
Is it good for kids? Yes, it's family-friendly science, though a few clips include ads for sponsors or his own kits.
