Home

Main navigation

  • World
    • Countries
    • World History & Timelines
    • World Stats & Facts
    • War
    • Current Events
    • World Geography
    • Religion
    • Natural Disasters
    • Accident Archive
  • U.S.
    • U.S. History
    • Government
    • U.S. Geography
    • Education
    • Laws & Rights
    • National Landmarks
    • The Fifty States
    • U.S. Cities
    • U.S. Population
    • Race & Ethnicity
    • Postal Information
    • Speeches & Documents
    • U.S. State Flags
    • U.S. Maps
    • Timelines
  • People
    • People Fun Facts
    • Biographies
    • Women of Influence
    • U.S. Presidents
  • Science
    • Biology
    • Earth Sciences
    • Environment, Energy, and Nature
    • Health and Body
    • Plants
    • Animals
    • Dinosaurs
    • Inventions and Inventors
    • Chemistry
    • Physics
    • Weather
    • Food
    • General Science
    • Computers, Technology and the Internet
    • Transportation
    • Astronomy and Space
    • Interactive Periodic Table
  • Math
    • Numbers
    • Tables and Formulas
    • Money
    • Measurement
    • Factors and Fractions
  • Language Arts
    • Creature Catalog
    • All About Books
    • Grammar and Spelling
    • Speaking of Language
    • Mythology
  • Homework
    • Geography
    • History
    • Language Arts
    • Mathematics
    • Science
    • Social Studies
    • Writing
    • Research
    • Speaking & Listening
    • Studying
  • Games
    • Roman Numeral Challenge
    • Math Flashcards
    • Hangman
    • Same Game
    • Tic Tac Toe
  • Holidays & Calendars
    • 2018 Calendar
    • 2018 Holidays
    • Calendars
    • Perpetual Calendar
  • Tools
    • Almanac
    • Atlas
    • Conversion Calculator
    • Dictionary
    • Distance Calculator
    • Encyclopedia
    • Place Finder
    • Spell Checker
    • Thesaurus
ADVERTISEMENT
  2. / Science
  3. / Astronomy and Space

Cite

Space Exploration

Earth's moon
  • Encyclopedia: Space
  • Mars Video and Educational Activities
  • The Universe
  • Constellations and Stars
  • The Solar System
  • Space Exploration
  • NASA Turns 50
  • Space Shuttle Timeline
Science & Technology
Play Poptropica Worlds

Download Poptropica and play for free!

Explore a limitless universe of uncharted islands
App store
Google Play
 

Featured Videos

ADVERTISEMENT

Flashcards

Hone your math skills with our flashcards!

ADVERTISEMENT

Kidspiration Videos

Interviews with leading professionals
by kids and for kids!

Hangman

Grow your vocab the fun way!

  • PRIVACY POLICY
  • Terms of Use
  • Citing Fact Monster™
  • Contact Us
  • Advertise
  • Part of FEN Learning
  • FactMonster
  • InfoPlease
  • FamilyEducation
  • TeacherVision

© 2000-2018 Sandbox Networks, Inc. All Rights Reserved.

FactMonster.com is certified by the kidSAFE Seal Program.

FactMonster.com is certified by the kidSAFE Seal Program. To learn more, click on the seal or go to www.kidsafeseal.com.