Why Pencils, Salt, and Bread Are Prohibited in Space

Why Pencils, Salt, and Bread Are Prohibited in Space

There’re many things banned in space: like salt and bread, because crums can damage the equipment. When it comes to beverages, carbonated drinks are off the table as well because they’re buoyant in a weightless environment. But pencils are also prohibited to use in space. Why? The answer will surely surprise you…

Here’re the coolest facts about space to share with your friends. You’ll learn why the Moon is not entirely white and devoid of color. And why astronauts need to exercise that much while in space.


Pockets of water on Moon 00:00
Cold traps 00:26
Moon color 01:15
No gravity 01:55
Skin on feet 02:20
Training on ISS 02:45
Pencils in space 03:43
Itching sensation 04:30
Project Mercury 05:23
Radiation from the Sun 05:48
Bright orange suit 06:12
SAFER jetpack 07:10
Teach a goldfish drive 08:05

Samantha Cristoforetti performing the Valsalva manoeuvre during pressurization of the Russian Sokol space suit:
By Samantha Cristoforetti – https://www.flickr.com/photos/astrosamantha/6382057049/, CC BY 2.0 https://creativecommons.org/licenses/by/2.0, https://commons.wikimedia.org/w/index.php?curid=32324145
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