Writing Prompts about Space and Planets

Very little inspires more curiosity than space and this collection of prompts for writing on space and planets will help your students explore this curiosity. From telescopes that let us see the planets to the rockets that take us to the stars, space and space travel are the things that were borne of the imagination. Designed for 3rd graders to high school, these expository writing prompts are sure to get your student’s imaginations running wild.

→ Writing Prompt 1: You are an astronaut on a peaceful, exploratory mission to Planet Q. As a representative from Earth, you are to present three gifts from our planet. What items will you take? Write a proposal to the sponsors of your mission explaining why you think these will make excellent tokens.

→ Writing Prompt 2: Using your knowledge of science, geography and environment, explain what we would have to do to survive on another specific planet in our Solar System.

→ Writing Prompt 3: We always dream about the possibility of life on other planets. Can you imagine, however, what we must look like to aliens who may be watching us? Write a story from the point of view of an alien who is observing the people of Earth.

→ Writing Prompt 4: Virgin Galactic is planning on launching flights into space for regular civilians in the next few years. The cost of the trip will be $250,000 and the trip will include three days of training in addition to a flight into outer space for two and a half hours. If you could afford it, would you like to go? Why or why not?

→ Writing Prompt 5: Our solar system consists of the sun, as well as everything bound to the sun’s gravitational pull, such as earth and the rest of the planets, dozens of moons, and millions of asteroids, comets, and meteoroids. We are, in fact, part of the Milky Way. But we are not the only planetary system in the Milky Way. Indeed, there are thousands of other planetary systems orbiting their own stars. How far do you believe we will ever be able to travel within our solar system and even beyond? Do you feel this may happen in your lifetime?   

→ Writing Prompt 6: Describe an experiment to be conducted on board the Space Shuttle.

→ Writing Prompt 7: What do you think lies beyond the edge of space? Do you think we can ever know whether or not the Universe is infinite?

→ Writing Prompt 8: You are an asteroid. Introduce yourself to someone, explaining your typical day, your life in general, and how you deal with any dangers you routinely face.

→ Writing Prompt 9: Make up a new planet. Describe the important features of the landscape, what the climate is like, and what lives there. Write from the viewpoint of the first visitor to this planet.

→ Writing Prompt 10: You are going on a trip to the moon. Think about three things you would take with you and tell why you would take these three things.

Prompts for Writing on Space and Planets


Prompts for Writing on Space and Planets Continue 

→ Writing Prompt 11: Imagine you have the chance to be the first student astronaut to explore another planet. Would you accept the job? Give reasons why or why not.

→ Writing Prompt 12: Do you think mankind will ever colonize another planet in your lifetime? Why do you believe we will or we won’t?

→ Writing Prompt 13:  There is an argument that it is a waste to spend money on a space program when there is so much need right here on Earth. Do you think it would be wiser to take the billions spent on NASA and instead try to fix the world’s problems. Or do you believe that exploration in space is just as important and may eventually solve some of Earth’s problems when we are able to colonize another planet?

→ Writing Prompt 14: Is there is life on other planets? Write a brief essay explaining why you believe there is or there isn’t. 

→ Writing Prompt 15: History was made recently with a first ever all-civilian spaceflight called SpaceX. It was the first expedition into orbit without any professional astronauts on board. The four civilians were selected through an online contest where every candidate had to apply. Write a brief application explaining the reasons why you would have been an excellent candidate for this flight. 

→ Writing Prompt 17:  There are many valuable resources in space. For example, there’s a highly valuable resource called helium-3, which scientists think could be used in nuclear fusion reactions without producing radioactive waste. Effectively, there are huge amounts of helium-3 deposits on the moon and elsewhere in our solar system. The problem, though, is that the existing international space laws are not properly adequate to handle the complicated network of private companies and nations competing for these resources in space. Write an essay explaining the importance of establishing clear international rules and policies for exploiting space resources.

→ Writing Prompt 18: Weigh the risks and rewards of space flight by explaining why you would or would not like to be a passenger on the Space Shuttle.

→ Writing Prompt 19: The speed of light is 186,000 miles per second. Will we ever travel faster than the speed of light?

→ Writing Prompt 20: The Hubble Space Telescope, launched in 1990, was the first space-based major optical telescope. Among other things, it was able to accurately determine the age of the universe (13.8 billion years). In 2021, a new telescope called the James Webb Space Telescope, was launched. It is the largest and most technologically advanced space telescope ever built. Explain the advantages this new telescope provides.

→ Writing Prompt 21: It is estimated that the universe holds between 200 billion and two trillion galaxies. Inside each galaxy, there are possibly 100 billion stars. And orbiting each star there are between one and ten planets. With these facts in hand, explain why you believe we are not the only living beings in the universe. Or, on the other hand, explain why you believe that we are.