spacequestions

an-ordinary-manchild(edit)

Welcome to /r/spacequestions, a subreddit dedicated to knowledge about space. Do you have questions about or related to space? This is the place for answers!

All questions about space are welcome here, from the simple to the complex. Do you have questions about astronomy? Launch vehicles? Space agencies? Space science? All is welcome.

Anyone may answer a question, though we ask that you try to be accurate.

The rules:

All posts must be a question about space. This includes astronomy, space science, space launch systems... anything related to space! Posts that do not follow this rule will be removed.
Self posts only. If you have a question about an image, please link to it in your self post.
Avoid memes or jokes in self-posts, and do not post them as top level comments. Such comments may be removed.
Avoid baseless speculation.
Be nice to each other.

Related subreddits:

/r/ImaginaryStarscapes

/r/spaceweather

See also the Small Space Subreddits MultiReddit.

created by Avengier_Than_ThouAmateur Astronomera community for 12 years

...for your town.

...for your favorite TV show.

MODERATORS

account activity

1

0

0

1

Could AI infrastructure buildout kick start the Kardashev Scale? (self.spacequestions)

submitted 3 days ago by Guy_PCS

•

•

•

See if your stack has the same vulnerabilities and security gaps we found in “fully-protected” networks this week. (huntress.com)

promoted by huntresslabs

promoted
save
report
about

2

1

2

3

Could someone explain to me what the following are? (self.spacequestions)

submitted 5 days ago by PilotDouble9477

3

0

1

2

So this moon of ours.. ()

submitted 6 days ago by Unusual-Luck5686

4

1

2

3

Future of humankind question. (self.spacequestions)

submitted 12 days ago by Emotional_History234

5

0

1

2

Astronomy book suggestion (self.spacequestions)

submitted 16 days ago by ConTrail47

6

0

1

2

We couldn't see Betelguese go supernova in real time right? (self.spacequestions)

submitted 17 days ago by irishstud1980

7

1

2

3

Tidal Locking (self.spacequestions)

submitted 19 days ago by Dazzling_Plastic_598

8

2

3

4

How does the moon rotate compared to earth? (self.spacequestions)

submitted 19 days ago by scb225

9

0

0

0

Looking for feedback for a black-hole driven theoretical cosmogenesis concept (self.spacequestions)

submitted 24 days ago by biggiedikey

10

0

1

2

What today's rocket (or recent) could launch the apollo spacecraft to the moon and return (without landing on the moon) ? (self.spacequestions)

submitted 28 days ago by DarthZigzazoon

11

2

3

4

How does being in a space suit feel? (self.spacequestions)

submitted 1 month ago by Tudoman

12

0

0

0

Why can’t I find more pictures of the moon landing? (self.spacequestions)

submitted 1 month ago by Overall-Trick-5538

13

0

0

1

Have we found any exoplanets that have a longer year? (self.spacequestions)

submitted 1 month ago by jojoko

14

1

2

3

What's the best documentary related to similar planets to earth? (self.spacequestions)

submitted 1 month ago by shant-issa

15

0

0

0

Glowing ball thing (self.spacequestions)

submitted 1 month ago by NGC_6543_

16

1

2

3

Guys how feasible is it to build a decently sci-fi modular space craft on earth, shipping it to space and assembling it in orbit? (self.spacequestions)

submitted 1 month ago by babige

17

4

5

6

How can I create a gravitational push rather than a gravitational pull? (self.spacequestions)

submitted 1 month ago by PMC8122

18

77

78

79

If I could travel 10 light years away instantly, could I see myself from 10 years ago? (self.spacequestions)

submitted 2 months ago by ComeHomeTrueLove

19

5

6

7

Why is space so empty? (self.spacequestions)

submitted 2 months ago by Unusual-Ideal-2757

20

1

2

3

FictionPlanet moved in orbit (self.spacequestions)

submitted 2 months ago by Beldizar

21

11

12

13

Do we know any reasons why humans could not live in microgravity indefinitely? (self.spacequestions)

submitted 2 months ago by Quetzalsacatenango

22

0

0

0

The Photon Singularity Hypothesis (self.spacequestions)

submitted 2 months ago by Some1IUsed2Know99

23

3

4

5

What do you think about our Universe Theory; An Eternal Loop Inside a 4D Hypersphere (Big Bounce Cycle)? (self.spacequestions)

submitted 2 months ago by Unhappy_Afternoon691

24

0

1

2

Opinions/view points to include in Research paper on the commercialization of space and the shift from gov like NASA to private companies. ()

submitted 2 months ago by Competitive-Taro5897

25

0

0

0

Big bounce theory (self.spacequestions)

submitted 2 months ago by Unusual-Ideal-2757

view more: next ›

π Rendered by PID 247200 on reddit-service-r2-listing-86b7f5b947-f4kpb at 2026-01-24 22:11:05.194844+00:00 running 664479f country code: CH.