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  1. Etymology

    The Modern English word Earth developed, via Middle English, from an Old English noun most often spelled eorðe. It has cognates in every Germanic language, and their ancestral root has been reconstructed as *erþō. … See more

    Natural history

    The oldest material found in the Solar System is dated to 4.5682+0.0002 −0.0004 Ga (billion years) ago. By 4.54±0.04 Ga the primordial Earth had formed. The bodies in the Solar System formed and evolved with the Sun. In … See more

    Table of Contents
     
  1. Eyes on the Earth - NASA's Eyes

  2. Facts About Earth - NASA Science

  3. Earth | Definition, Size, Composition, Temperature, …

    2 days ago · Earth, third planet from the Sun and the fifth largest planet in the solar system in terms of size and mass. Its single most outstanding feature is that its near-surface environments are the only places in the universe known to …

  4. NASA/JPL Eyes - Solar System Interactive

  5. Earth - NASA Science

  6. All About Earth | NASA Space Place – NASA Science for Kids

  7. Earth from Space in 4K - NASA+

  8. What Is Earth? (Grades 5-8) - NASA

  9. Google Earth