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Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallEarth and the solar system are about 4.6 billion years old; the universe is about 13.8 billion years old. By those rounded estimates, the universe is roughly three times as old as Earth and the solar system. The more precise figure of 4.568 billion years refers to early solid material found in primitive meteorites—not to an exact moment when Earth was fully formed.
How old are Earth, the solar system, and the universe?
| What is being dated | Approximate age | What the figure means |
|---|---|---|
| Earth and the solar system | About 4.6 billion years | NASA’s rounded estimate based on radioactive isotope evidence from Earth materials and asteroids, including meteorites. NASA Science |
| Early solid material in primitive meteorites | 4.568 billion years | A measured age for some of the solar system’s earliest solids, used as a benchmark for the solar system’s age—not an exact date for Earth’s completion. NASA Johnson Space Center ARES |
| The universe | About 13.8 billion years | NASA’s approximate estimate, based on evidence including the ages of the oldest stars and the universe’s expansion. NASA Science |
Subtracting the rounded figures, the universe is about 9.2 billion years older than Earth and the solar system. The difference is approximate because the headline ages are rounded.
Why do sources say 4.5, 4.6, or 4.568 billion years?
Those figures are not competing ages so much as estimates stated at different precision levels or attached to different things. NASA’s Earth facts page gives a rounded age of about 4.5 billion years for Earth’s formation; its general comparison uses about 4.6 billion years for Earth and the solar system. The 4.568-billion-year figure identifies early meteorite material. NASA Facts About Earth NASA Science NASA Johnson Space Center ARES
In other words, a decimal-rich age for an early sample should not be mistaken for a precise timestamp for the formation of the whole planet. Earth formed as the solar system developed, but the meteorite benchmark dates early solids rather than the instant Earth was complete.
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#1 Best Overall
- BUILD & DISPLAY A MOVING, GLOWING SOLAR SYSTEM – With this kit, kids can customize all 8 planets and the sun, creating a stunning 3D solar system model that glows in the dark! It’s an awesome addition to any space-themed room.
- ALL-INCLUSIVE KIT – Everything needed to build a glowing solar system is included: 6 vibrant paint colors, glow-in-the-dark accent paint, brush, palette, fun decals, and a poster with solar system facts! Kid-friendly instructions make assembly easy!
- MOVABLE ARMS FOR EASY ADJUSTMENTS – Adjust the position of the planets with ease! The model’s movable arms allow kids to set up and rearrange their solar system display to match their imagination.
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How do scientists estimate Earth’s and the solar system’s age?
Scientists use radiometric dating: radioactive isotopes decay at measurable rates, and the proportions of isotopes in a material can help establish when it formed. Evidence from Earth and asteroid materials, including meteorites, supports the estimate for Earth and the solar system. NASA explains that primitive meteorites preserve some of the earliest solid matter; researchers use the age of this material, 4.568 billion years, to determine the solar system’s age. NASA Science NASA Johnson Space Center ARES
Meteorites are pieces of space rock that reach Earth’s surface, and some preserve material from the solar system’s early history. NASA Johnson Space Center ARES
Rank #2
- 【SET CONTENT】The solar system kit includes 7.87 inches of foam discs, 1 sun, 12 foam balls of different shapes, 4 foam stars, 15 bamboo sticks 15 toothpick flags, 12 Colors, 2 Brushes, 1 palette, 1 instruction. The Solar System Model Kit provides everything kids need to carry out solar system projects, kids can easily start solar system projects in school or at home!
- 【Space Enlightenment】The Solar System Model Kit allows kids to color and build their own solar system model, providing kids a more intuitive understanding of the planet in the solar system. With a Solar System Instruction, which introduces kids to the relevant details of the solar system, sparking their curiosity and desire to explore astronomy and science!
- 【High Quality】The solar system science kit for kids 3-5 is made of durable polystyrene foam with a smooth surface that's easy to color, and includes 12 acrylic paints, which are safe and odorless. Kids can use their imagination to create the planets of the school solar system project!
- 【Learning by Playing】The solar system project kit helps kids build skills through fun. Creating planets not only improves kids hand-eye coordination and focus, but also boosts their scientific knowledge and artistic skills.
- 【Wide Application】The Solar System Kit is perfect for themes and activities about the solar system and planets. It’s great for enhancing classroom learning about the solar system and also makes a fun family activity.
How do scientists estimate the universe’s age?
The universe does not have a solid sample whose age can be read like a rock’s. NASA describes the estimate as drawing on the ages of the oldest stars and the universe’s expansion rate. Measurements of the Hubble constant—the rate used to describe cosmic expansion—provide one part of that picture. NASA’s Hubble explainer lists measurements around 70–76 kilometers per second per megaparsec and connects them with an age estimate of about 13.8 billion years. That range is for the expansion-rate measurements, not a stated uncertainty interval for the universe’s age. NASA Science NASA Hubble: Hubble Constant and Tension
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Best Value
- Science Kits for Kids 8-12: Complete model solar system for kids includes wood set, puzzle, and fun fact cards. This two part DIY solar system kit allows kids to build a cool model, paint, and learn about the major 9 planets. Designed for 8 & up.
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- Craft & Learn: Everything you need to build the wood model, paint the major planets, and build the puzzle. Includes The Sun, Mercury, Earth, Jupiter, Uranus, Venus, Mars, Saturn, and Neptune. Includes paint and brushes. Build the model in approximately 1-2 hours.
Rank #4
- CURIOUS KIDS FAVORITE TOY: Playz Electric Solar System Model Kit teaches your little astronomer the wonders of our galaxy with a 4 speed orbit motor. Ours is the biggest space toys model kit available in the USA. Perfect astronomy gift for kids!
- HANDS ON PROJECT: 75+ premium parts combined with a color instruction manual makes for an intuitive DIY assembly. Loaded with fun educational facts about physics, astronomy, science, and engineering. Large model measures 26" x 18" x 11"
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Rank #3
- Solar system model kit: package comes with 12 pieces foam balls, 2 pieces foam rings, 15 pieces bamboo sticks, 15 pieces toothpick flags, 12 color pigments, 2 pieces painting brushes, 1 pieces paint tray palette. Now securely shipped in a sturdy cardboard box to guarantee all pieces arrive undamaged and ready for your project.
- Variety of Sizes for Visual Learning: The kit includes 10 differently sized foam balls (as pictured) to visually represent the relative scale and hierarchy of the Sun, planets, and Pluto. This hands-on approach helps learners easily observe and understand planetary size relationships.
- Upgraded Premium Paint Set: Features our enhanced paint set with 12 vibrant colors (increased from 8), each in a larger 5ml pot for richer coverage, longer use, and more creative possibilities.
- Easy to assemble: You can identify the different planets by writing the planet's name on a blank toothpick flag and inserting it into a foam ball. No glue required, they can be easily assembled using bamboo skewers, create your planetary model to understand how our solar system is arranged.
- Fun learning tool: You and your kids had a great time painting and putting this together and learnt a lot about the planets in the process. It was a decent lesson representing the Solar system for a young child. Perfect for handmade craft, DIY decoration, school project, science projects and more.
How to read the comparison accurately
- Keep the objects distinct: 13.8 billion years is the universe’s approximate age; about 4.6 billion years is the rounded age of Earth and the solar system.
- Attach precision to its evidence: 4.568 billion years dates early solid meteorite material used as a solar-system benchmark, not Earth’s exact completion.
- Recognize the different methods: Earth and solar-system estimates use isotope evidence in material samples; the universe’s estimate draws on oldest-star ages and cosmic expansion.
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