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January 19, 2023

105 Best Outer Space Captions for Instagram with Astronaut & NASA Puns

In this article, I will provide you with some of the best outer space captions for Instagram. These galaxy captions, universe quotes, and other outer space puns will surely help boost your Instagram content.‍

Khaycelyn Dimaano
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Outer space is still a bit of a puzzle to all of us. There has been virtually no one there, and it is packed with remarkable items that test humanity's understanding of scale, time, and energy.

It forces us to ask difficult questions and benefits us in unforeseen ways.

Yes, outer space is very interesting. Hence, some people love posting outer space photos on Instagram and have them as their primary content as they are one of those people who have visited and witnessed otherworldly things. 

Well, if you are one of those science-related content makers, you might be interested in uploading some space photos along with space captions or quotes.

In this article, I will provide you with some of the best outer space captions for Instagram. These galaxy captions, universe quotes, and other outer space puns will surely help boost your Instagram content.

105 Outer Space Captions You Can Use for Your Science-Related Instagram Content

Astronaut Standing Beside American Flag on the Moon

Check out our collection of captions below if you're looking for insightful space captions or puns to accompany your amazing space photos or other galaxy-related Instagram content.

  1. Some people live for the weekend. We live for infinity.

  1. Space out and lose yourself in the vastness of space.

  1. Nothin’ like that first breath of fresh, crisp fall air. 

  1. As NASA says: ” Mars rocks.”

  1. Shooting for the moon? We’re happy to help you get there.

  1. Looking good, looking up!

  1. What could be better than an adventure in space? Let us know if you find out.

  1. Our journey through space continues. It’s been a long time, but we’ve made it a long way. Just a little further to go. See you out there, Earthlings.

  1. Rockets and spaceships, oh my! Love the view from here.

  1. We’re still in awe of this photo of the #SpaceStation flying over our country’s breathtakingly beautiful landscapes.

  1. Stay in touch with us even when you’re out there.

  1. We’re taking our homes and planet to the next frontier. Discover ways to harness the unlimited possibilities of outer space.

  1. Did you know that by 2040, over 500 million people will live in urban areas where they will have to rely on artificial light for nighttime illumination?

  1. Welcome back to our solar system.

  1. Happy anniversary to our favorite little planet. We made it one whole year. It’s been an awesome ride. Thanks for the memories!

  1. May your weekend be as fun and out of this world!

  1. Life is short. Rock it like an intergalactic space princess.

  1. Hello, new earthlings!

  1. We are all made of stardust—and starry-eyed dreams.

  1. We’re outta this world with our new coffee drinks and baked goods!

  1. We all know the feeling of homesickness, but there’s one sensation that tops it all: that longing to feel weightless.

  1. Let’s take a picture and show that we could all learn a thing or two about the universe.

  1. From distant galaxies to star clusters to black holes, a universe is a wonderful place.

  1. Finally, the force is weak with this one.

  1. We’re orbiting around the sun and have reached a new year.

  1. I can’t believe we haven’t been here before. It’s so beautiful! 

  1. Off we go into the wild blue yonder.

  1. May the Fourth be with you.

  1. Zero gravity is the future. We’ve been in a holding pattern too long. Let’s float away into dreamland.

  1. What we need is to go to Mars.

  1. We’re more than astronauts – we’re space junkies. We believe that everyone has the potential to be an explorer, and encourage you to explore the full range of options in our universe.

  1. Polaris: You’re my only star.

  1. When the night sky looks back at you.

  1. We’re ready for liftoff into the weekend. Our solar system is pretty big.

  1. Hit play on the music and time travel with us to the last decade.

  1. The beautiful sight of our planet from space.

  1. It’s a bit of a mind-melt, but that’s what makes it fun.

  1. We’re ready to venture out into deep space and migrate to Mars, even though we have a feeling that it’s going to be cold.

  1. Travelling through space and time is the best way to make your Monday disappear.

  1. Welcome to our space.

  1. Getting a glimpse of Earth is a gift. 

  1. We go where our knowledge takes us.

  1. Leaving our planet is the first step to intergalactic friendship!

  1. Looking for a place to watch the #supermoon tonight? Look no further! We got you covered with a full evening of programming that celebrates our celestial neighbor.

  1. I’m pretty sure we all have a galaxy in our hearts.

  1. Hello from Mars!

  1. Space is the final frontier—and we’re going to explore it one small step at a time.

  1. Space is the final frontier, and Tesla has just about explored it all. And now, for one lucky person, the journey can continue with this Voyager award package.

  1. Weren’t the stars the first thing you looked for when you stepped outside?

  1. Take me back to when our laptops were on desktops and the internet was dial-up. I miss the simplicity.

  1. Happy Friday, we’re blasting off into the weekend!

  1. Exploring the cosmos and making it an infinite playground for your creative projects.

  1. Let’s get astrophysical.

  1. It’s a big, beautiful universe out there. Stay curious.

  1. We’ve got a window seat for you, where you can see the whole world outside your window—but all you need to do is scroll on Instagram.

  1. I believe we are all astronauts. We’re just waiting to get on board. So what if you need a rocket?

  1. Sending love from our satellite.

  1. A galaxy not so far away.

  1. Hello from the International Space Station, where we can see every day how beautiful our world is. 

  1. Home is where freedom is.

  1. Our solar system may be a little chaotic at times, but it’s still pretty awesome.

  1. You can’t see me, but I’m waving at you from Planet Earth. 

Wittiest Outer Space Puns and Jokes

Hitchhiking Astronaut

  1. What a luna-tic.

  1. Know your w-earth.

  1. Get outer my space.

  1. Don’t be so sun-sitive.

  1. I’ve over the moon for you.

  1. I think you are out of this world.

  1. Happy b-earth-day!

  1. Today’s going to be great, we’ll definitely Rocket!

  1. Oh, don’t be so star-castic.

  1. Do you have a plan-et for this weekend?

  1. Time to Sa-turn things around!

  1. Like father, like Sun.

  1. It’s just a phase.

  1. Outer my way!

  1. Personally, I always plan-et ahead of time.

  1. You have an old sol-ar.

  1. We have a plutonic relationship.

  1. Wow, that d-asteroid my faith.

  1. Loving this from my head to plu-toe!

  1. Time for a change of s-pace.

  1. I’ve got planet-y of puns up my sleeve.

  1. Send my selfie to NASA, because I’m a star.

  1. Sa-TURN down for what?

  1. Jack of all trades, Mars-ter of none.

  1. I’m Neptune-ing you out!

  1. That was sun-thing special.

  1. I need space.

  1. You’ve abducted my heart.

  1. You make my world go round.

  1. I think you’re pretty space-cial.

  1. You must be the sun because you’re the centre of my universe.

  1. Love you to the moon and back.

  1. Like Mercury, you’ll always be first to me.

  1. How do you get a baby astronaut to go to sleep? Rocket.

  1. How does a Man cut his hair on the moon? Eclipse it!

  1. You rock my world.

  1. You’re a blast.

  1. What do you call a lazy man in space? A procrastronaut.

  1. What do planets like to read? Comet books.

  1. What do you call someone who’s NOT a vegetarian? A meteor.

  1. What type of knot can you tie in space? An Astro-knot.

  1. What’s smaller than a planet? The planet’s sun.

  1. Why couldn’t the astronaut focus? He kept spacing out.



This universe we are living in is full of mysterious yet interesting things. Hence, if you love posting outer space-related content on your Instagram, you might want to rely on this page for the best space captions for Instagram!

Tired of searching for captions?

Let give you unique Instagram captions on demand.

In seconds you have dozens of unique, compelling captions to choose from.

Get Started ― It's Free

About the author
Khaycelyn Dimaano
Khaye is a full-time working mom. She juggles her responsibility as a full-time VA and writer while taking care of her four children.

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