Are you looking for planets reading comprehension worksheets for Grades 3, 4, and 5? You just found the most complete space science reading pack available! This free printable collection covers 30 topics including all eight planets, dwarf planets, moons, asteroids, comets, and more. Each worksheet features a nonfiction reading passage followed by four comprehension questions — perfect for classroom use, homeschooling, ESL learners, and science centers. Grab your free sample download below and explore all 30 space reading worksheets!
📦 What's Inside This Worksheet Pack?
Perfect for teachers, homeschooling parents, tutors, and ESL instructors covering space science!
👩🏫 Who Are These Worksheets Perfect For?
Classroom Teachers
Homeschool Parents
ESL / EFL Teachers
Tutors
Science Clubs
📚 Curriculum Alignment
These space reading comprehension worksheets align with Common Core ELA Standards (RI.3–5), Next Generation Science Standards (NGSS) — Space Systems, Australian Curriculum (Science & English), UK National Curriculum KS2, and are suitable for ESL/EFL nonfiction reading programs worldwide.
🪐 All 30 Space Reading Comprehension Worksheets
Click the download button below each worksheet to get your free sample PDF!
Mercury Reading Comprehension Worksheet
Grade 3–5 | Nonfiction Space Science
This Mercury worksheet helps students explore the planet closest to the Sun. Students read a nonfiction passage about Mercury's extreme temperatures, surface features, size, and the space missions that have visited it. Four comprehension questions check understanding of key facts.
📋 COMPREHENSION QUESTIONS:
1. What are the temperatures on Mercury like?
2. How does the size of Mercury compare to Earth's moon?
3. How long is a year on Mercury compared to Earth?
4. How many space missions have visited Mercury?
Venus Reading Comprehension Worksheet
Grade 3–5 | Nonfiction Space Science
Students discover why Venus is the hottest planet in our solar system despite not being the closest to the Sun. This worksheet explores the greenhouse effect, Venus's reverse spin, and its nicknames Morning Star and Evening Star.
📋 COMPREHENSION QUESTIONS:
1. Why is Venus the hottest planet in our solar system?
2. How does the length of a day on Venus compare to its year?
3. In which direction does Venus spin compared to most planets?
4. What are the two nicknames given to the planet Venus?
Earth Reading Comprehension Worksheet
Grade 3–5 | Nonfiction Space Science
Students learn fascinating facts about our home planet — from its water-covered surface to tectonic plates, from the origin of life to Earth's inner structure. A great starting point for a space science unit.
📋 COMPREHENSION QUESTIONS:
1. What percentage of Earth's surface is covered by water?
2. How long does it take for Earth to travel around the Sun?
3. What are tectonic plates and what events can they cause?
4. When did scientists believe life on Earth first begin?
Mars Reading Comprehension Worksheet
Grade 3–5 | Nonfiction Space Science
Explore the Red Planet! Students read about Mars's towering volcano Olympus Mons, the giant Valles Marineris canyon, its two moons, and the rovers searching for ancient life. A highly engaging worksheet for space enthusiasts.
📋 COMPREHENSION QUESTIONS:
1. Why is Mars often called the Red Planet by scientists?
2. What is Olympus Mons and how tall is it on Mars?
3. How long is one Martian year compared to one Earth year?
4. What have rovers like Perseverance been searching for on Mars?
Jupiter Reading Comprehension Worksheet
Grade 3–5 | Nonfiction Space Science
The biggest planet in our solar system! Students read about Jupiter's Great Red Spot storm, its 95 moons, the Galilean moons, and why Europa excites scientists searching for life beyond Earth.
📋 COMPREHENSION QUESTIONS:
1. What is the Great Red Spot found on Jupiter's surface?
2. How many Earths could fit inside the giant planet Jupiter?
3. How long does one year on Jupiter last in Earth years?
4. Why are scientists especially interested in Jupiter's moon Europa?
Saturn Reading Comprehension Worksheet
Grade 3–5 | Nonfiction Space Science
Students learn all about Saturn's spectacular rings, its amazing moon Titan, and why Saturn would float on water. A crowd-favorite worksheet topic that never fails to amaze young learners!
📋 COMPREHENSION QUESTIONS:
1. What are Saturn's rings made of and how thin are they?
2. Why would Saturn float if placed in a giant water ocean?
3. How long does one year on Saturn last compared to Earth?
4. What is special about Saturn's largest moon called Titan?
Uranus Reading Comprehension Worksheet
Grade 3–5 | Nonfiction Space Science
The planet that spins on its side! Students explore Uranus's extreme tilt, blue-green color, Shakespeare-named moons, and its discovery by William Herschel. A wonderfully unique planet for students to learn about.
📋 COMPREHENSION QUESTIONS:
1. What makes the way Uranus spins very unusual indeed?
2. Why does Uranus appear blue-green in color to observers?
3. How long does one year on Uranus last in Earth years?
4. Who discovered Uranus and what tool did they use?
Neptune Reading Comprehension Worksheet
Grade 3–5 | Nonfiction Space Science
The windiest planet! Students read about Neptune's incredible storms, its retrograde moon Triton, and how its position was predicted mathematically before anyone saw it. A fascinating worksheet for curious young readers.
📋 COMPREHENSION QUESTIONS:
1. What color is Neptune and why does it appear that way?
2. How strong are the winds on Neptune compared to other planets?
3. How was Neptune's position first discovered by astronomers?
4. What is unusual about the way Neptune's moon Triton orbits?
Pluto Reading Comprehension Worksheet
Grade 3–5 | Nonfiction Space Science
Why is Pluto no longer a planet? Students explore this fascinating debate, learn about Pluto's heart-shaped nitrogen plain, its giant moon Charon, and the historic New Horizons flyby of 2015.
📋 COMPREHENSION QUESTIONS:
1. Why was Pluto reclassified as a dwarf planet in 2006?
2. How long does it take Pluto to orbit once around the Sun?
3. What is the name of Pluto's largest moon and why is it special?
4. What did NASA's New Horizons spacecraft discover near Pluto?
Ceres Reading Comprehension Worksheet
Grade 3–5 | Nonfiction Space Science
Ceres — the queen of the asteroid belt! Students read about this dwarf planet's bright mystery spots discovered by the Dawn spacecraft, its icy surface, and its unusual classification history since 1801.
📋 COMPREHENSION QUESTIONS:
1. Where is the dwarf planet Ceres located in our solar system?
2. Why is Ceres classified as a dwarf planet and not an asteroid?
3. What did the Dawn spacecraft discover on the surface of Ceres?
4. How long does one day and one year last on dwarf planet Ceres?
Eris Reading Comprehension Worksheet
Grade 3–5 | Nonfiction Space Science
📋 COMPREHENSION QUESTIONS:
1. Where is the dwarf planet Eris located in our solar system?
2. Who discovered Eris and how was it found by astronomers?
3. How long does it take Eris to orbit once around the Sun?
4. Why did the discovery of Eris cause debate among astronomers?
Makemake Reading Comprehension Worksheet
Grade 3–5 | Nonfiction Space Science
📋 COMPREHENSION QUESTIONS:
1. Where is the dwarf planet Makemake found in our solar system?
2. Who discovered Makemake and when was the discovery made?
3. How long does Makemake take to orbit once around the Sun?
4. What does the surface of Makemake look like and feel like?
Haumea Reading Comprehension Worksheet
Grade 3–5 | Nonfiction Space Science
📋 COMPREHENSION QUESTIONS:
1. What makes the shape of Haumea unusual among dwarf planets?
2. Why does Haumea have such a stretched and oval shape overall?
3. How long does one full day last on the dwarf planet Haumea?
4. What surprising feature was discovered around Haumea in 2017?
Titan Reading Comprehension Worksheet
Grade 3–5 | Nonfiction Space Science
📋 COMPREHENSION QUESTIONS:
1. What makes Titan different from all other moons in our solar system?
2. What are the lakes and rivers on Titan's surface made of exactly?
3. Who discovered Titan and in what year was it first found?
4. What did the Huygens probe discover when it landed on Titan?
Europa Reading Comprehension Worksheet
Grade 3–5 | Nonfiction Space Science
📋 COMPREHENSION QUESTIONS:
1. What covers the entire surface of Jupiter's moon Europa?
2. What do scientists believe exists beneath Europa's icy surface?
3. Why do scientists think Europa could support some form of life?
4. What is NASA's Europa Clipper spacecraft designed to investigate?
Ganymede Reading Comprehension Worksheet
Grade 3–5 | Nonfiction Space Science
📋 COMPREHENSION QUESTIONS:
1. What makes Ganymede the most unique moon in our solar system?
2. How does the size of Ganymede compare to other planets nearby?
3. What are the two main types of terrain found on Ganymede?
4. What did scientists discover might exist beneath Ganymede's surface?
Io Reading Comprehension Worksheet
Grade 3–5 | Nonfiction Space Science
📋 COMPREHENSION QUESTIONS:
1. Why is Io considered the most volcanically active body in space?
2. What causes the intense volcanic activity found on Io's surface?
3. What makes the surface of Io look colorful and pizza-like?
4. What famous volcano on Io shoots plumes hundreds of km high?
Callisto Reading Comprehension Worksheet
Grade 3–5 | Nonfiction Space Science
📋 COMPREHENSION QUESTIONS:
1. What makes Callisto's surface very distinctive among Jupiter's moons?
2. Why does Callisto show so little geological activity compared to others?
3. What do scientists believe may exist deep beneath Callisto's surface?
4. How long does Callisto take to complete one orbit around Jupiter?
Enceladus Reading Comprehension Worksheet
Grade 3–5 | Nonfiction Space Science
📋 COMPREHENSION QUESTIONS:
1. Why is Enceladus considered one of the most exciting moons today?
2. What remarkable discovery did the Cassini spacecraft make in 2005?
3. What chemicals were found in the geysers erupting from Enceladus?
4. What causes the geysers and heat activity found inside Enceladus?
Triton Reading Comprehension Worksheet
Grade 3–5 | Nonfiction Space Science
📋 COMPREHENSION QUESTIONS:
1. Why does Triton have a retrograde orbit around planet Neptune?
2. Why do scientists think Triton did not originally form near Neptune?
3. What type of geysers has Voyager 2 discovered on Triton's surface?
4. Who discovered Triton and how soon after Neptune was it found?
Phobos Reading Comprehension Worksheet
Grade 3–5 | Nonfiction Space Science
📋 COMPREHENSION QUESTIONS:
1. How close does Phobos orbit to the surface of planet Mars?
2. How many times does Phobos orbit Mars in one single Martian day?
3. What is the most prominent crater found on the surface of Phobos?
4. What will eventually happen to Phobos in about 50 million years?
Deimos Reading Comprehension Worksheet
Grade 3–5 | Nonfiction Space Science
📋 COMPREHENSION QUESTIONS:
1. How does Deimos compare in size to the other moon of Mars?
2. How long does it take Deimos to complete one orbit around Mars?
3. Why does Deimos appear to rise in the east and set in the west?
4. Who discovered Deimos and when was this discovery first made?
The Moon Reading Comprehension Worksheet
Grade 3–5 | Nonfiction Space Science
📋 COMPREHENSION QUESTIONS:
1. How far away is the Moon from Earth on average in kilometers?
2. Why do we always see the same side of the Moon from Earth?
3. What effect does the Moon's gravity have on planet Earth?
4. Who were the first humans to walk on the surface of the Moon?
The Sun Reading Comprehension Worksheet
Grade 3–5 | Nonfiction Space Science
📋 COMPREHENSION QUESTIONS:
1. What is the Sun made of and what type of object is it exactly?
2. How does the Sun produce the energy and light that it releases?
3. How long does light from the Sun take to reach planet Earth?
4. How old is the Sun and how much longer will it keep burning?
Asteroid Belt Reading Comprehension Worksheet
Grade 3–5 | Nonfiction Space Science
📋 COMPREHENSION QUESTIONS:
1. Where is the asteroid belt located in our solar system exactly?
2. What prevented the asteroid belt from forming into a full planet?
3. What are the three main types of asteroids found in the belt?
4. What is the largest single object found in the asteroid belt?
Kuiper Belt Reading Comprehension Worksheet
Grade 3–5 | Nonfiction Space Science
📋 COMPREHENSION QUESTIONS:
1. Where is the Kuiper Belt located in relation to planet Neptune?
2. How does the Kuiper Belt compare in size to the asteroid belt?
3. Which dwarf planets are known to be located in the Kuiper Belt?
4. What is thought to be the main source of short-period comets?
Oort Cloud Reading Comprehension Worksheet
Grade 3–5 | Nonfiction Space Science
📋 COMPREHENSION QUESTIONS:
1. Where is the Oort Cloud located in relation to our solar system?
2. Who first proposed the existence of the Oort Cloud and when?
3. What happens when objects in the Oort Cloud are disturbed by gravity?
4. Why has the Oort Cloud never been directly observed by astronomers?
Comets Reading Comprehension Worksheet
Grade 3–5 | Nonfiction Space Science
📋 COMPREHENSION QUESTIONS:
1. What are comets made of and why are they called dirty snowballs?
2. What happens to a comet when it travels close to the Sun?
3. What are the two types of tails that a comet can produce?
4. When will Halley's Comet next be visible from planet Earth?
Meteors Reading Comprehension Worksheet
Grade 3–5 | Nonfiction Space Science
📋 COMPREHENSION QUESTIONS:
1. What causes meteors to glow brightly as they fall through the sky?
2. What is the difference between a meteor and a meteorite exactly?
3. What is a meteor shower and when do they usually tend to occur?
4. What is the largest meteorite ever found on the surface of Earth?
❓ Frequently Asked Questions
What grade level are these planets reading comprehension worksheets?
These worksheets are designed for Grades 3, 4, and 5, generally suited for students aged 8–11. The nonfiction passages use clear, engaging language appropriate for intermediate readers, with comprehension questions targeting key reading skills including recall, comparison, and inference.
Are these worksheets aligned with Common Core Standards?
Yes! These space reading worksheets align with Common Core ELA Standards for informational text (RI.3–5), covering Key Ideas and Details, Craft and Structure, and Integration of Knowledge. They also align with Next Generation Science Standards (NGSS) for Space Systems.
Can I use these worksheets for homeschooling?
Absolutely! These worksheets are perfect for homeschooling families covering a solar system or space science unit. Each worksheet is self-contained — students read the passage independently and answer the four questions. No additional materials needed.
Are these suitable for ESL or EFL students?
Yes! The nonfiction passages use simple, clear sentence structures with controlled vocabulary, making them excellent for ESL and EFL learners at an intermediate English level. The space topic provides engaging, content-rich reading that motivates language learners.
What format does the full pack come in?
The full pack is available as a high-resolution PDF, ready to print on standard A4 or US Letter paper. It is a digital download — you will receive instant access after purchase. The worksheets are in black and white for economical printing.
How many worksheets are in the complete pack?
The complete pack includes 30 unique reading comprehension worksheets covering Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto, Ceres, Eris, Makemake, Haumea, Titan, Europa, Ganymede, Io, Callisto, Enceladus, Triton, Phobos, Deimos, The Moon, The Sun, Asteroid Belt, Kuiper Belt, Oort Cloud, Comets, and Meteors.
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Get all 30 planets reading comprehension worksheets in one complete, instant-download PDF pack. Perfect for classrooms, homeschools, tutoring sessions, and ESL programs!
⭐ Instant Download | Print-Ready PDF | Grades 3–5 | Common Core Aligned