A “space heater” doesn’t involve astronauts and outer space, but there are jokes.
   
“Hey, what do astronauts use when they get cold? A space heater! (Sorry sorry. Sorry.)” was posted on Twitter by Curtis on April 29, 2011. “What did the astronauts do when they got really chilly on their rocket ship? They turned on the space heater. #ofcourse” was posted on Twitter by natty bumpercar on December 9, 2011. “How do astronauts stay warm? With a space heater!” was posted on Reddit—Jokes on May 10, 2015.
         
“A space heater makes a great housewarming gift” is another space heater joke.
   
   
Wikipedia: Space heater
A space heater is a device used to heat a single, small area; central heating is used to heat many connected areas, such as the rooms of a house. Space heaters are powered by electricity or a burnable fuel, such as natural gas, propane, fuel oil, or wood pellets. Portable space heaters are usually electric, because a permanent exhaust is needed for heaters which burn fuel.
     
Twitter
Curtis
@resonantimage
Hey, what do astronauts use when they get cold? A space heater! (Sorry sorry. Sorry.)
11:15 AM · Apr 29, 2011·twicca
   
Twitter
natty bumpercar
@nattybumpercar
What did the astronauts do when they got really chilly on their rocket ship? They turned on the space heater. #ofcourse
12:50 PM · Dec 9, 2011·Twitter Web Client
   
Twitter
Tami Cru
@TamiCru
what am i supposed to do with a space heater? i’m not an astronaut
11:52 PM · Jan 28, 2013·Twitter Web Client
   
Twitter
Jacob Ford
@JakeFord83
What did the astronaut do when he got cold?? He turned on his space heater.
7:35 PM · Dec 17, 2013·Twitter Web Client
   
Twitter
Wolfgang Wang
@LamWangGetEm
What do astronauts use to stay warm?
A space heater.
9:28 AM · Dec 9, 2014·Twitter for iPhone
   
Twitter
Karl Calkins and 237 elves
@sniklaclrak
What do astronauts use to stay warm?
a space heater
12:06 AM · Apr 9, 2015·Twitter for Android
   
Reddit—Jokes
Posted by u/[deleted] May 10, 2015
How do astronauts stay warm?
With a space heater!
 
Google Books
Srsly Best Jokes Ever:
Jokes for Kids
By Chantelle Grace
Racine, WI: BroadStreet Kids
2017
Pg. ?:
What does an astronaut use to keep his feet warm?
A space heater.
   
Google Books
The Funniest & Grossest Joke Book Ever!
Edited by Editors of Portable Press
San Diego, CA: Portable Press
2017
Pg. ?:
How do astronauts keep warm on the International Space Station?
They turn up the space heater.
     
Reddit—Dadjokes
Posted by u/Grammar_Twatzi September 2, 2017
How do astronauts stay warm?
They use a space heater.
 
Twitter
FIRST LEGO League
@firstlegoleague
What do astronauts use to keep their feet warm? A space heater! #NationalTellAJokeDay #FIRSTLAUNCH2019
11:55 AM · Aug 16, 2018·Hootsuite Inc.
     
Reddit—Dadjokes
Posted by u/6DollarShirtsAds January 29, 2019
How do astronauts keep warm?
They use a space heater.
 
Twitter
Hugh Giddiot
@IFeelLikeTwit
Replying to @11LunarLuster11 and @Lunar_Luster
What do astronauts use to keep warm?
A space heater
8:10 PM · Jan 30, 2019·Twitter for iPhone
   
Reddit—3amjokes
Posted by u/liljacobs05 November 4, 2019
What do astronauts use to stay warm?
Space heater
 
Reddit—Dadjokes
Posted by u/hercxjo December 5, 2020
What do astronauts use to stay warm?
A space heater.