How do astronauts digest food when there is no gravity in space? When they eat food, why does it go down instead of up?

– Xochielt Sanchez

Answer by Robert Frost:

Absence of gravity doesn't make things go up.  

Things move only when a force induces them to move.  When food is swallowed, the muscles in the throat provide such a force and cause the food to move down the throat.

How do astronauts digest food when there is no gravity in space? When they eat food, why does it go down instead of up?

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s