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  • Asteroid Field

    Book Chapter | February 2018

    In this problem, students explore how forces change the direction of motion of a spaceship moving between asteroids. They simulate the scenarios by using puffs of air delivered through straws to move balls through a…

  • Science Sampler: NASA’s Dawn mission—Helping define planets, dwarf planets, and asteroids

    Journal Article | July 2007

    The decision by the International Astronomical Union (IAU) in 2006 to redefine the term planet has caught the attention of the public and students from grade school to graduate school. The IAU’s decision has not…

  • How Do Asteroids Cross Earth's Path?

    Lesson Plan | June 2020

    Asteroid Day, celebrated around the world, commemorates … of Siberia, Russia, was caused by an asteroid entering Earth's atmosphere … and use the thinking tools of cause and effect to try to explain how an asteroid from …

  • Occultations and Eclipses

    Journal Article | March 2019

    Astronomy throughout the year

  • Preparing for Cosmic Collisions

    Journal Article | March 2020

    around the Sun should be cause for some concern. For example, an asteroid … the object, comet, or asteroid intersects the Earth’s orbital path and when … by various space organizations. An asteroid is …

  • Meet the NSTA Leadership

    Page | June 2020

    Meet the NSTA Leadership Dr. Elizabeth Allan President 2020–2021 Dr. Elizabeth "Beth" Allan is the president of the National Science Teaching Association (NSTA). She began serving her one-year term on June 1, 2020. Allan is currently Professor of Biology and Coordinator of the Secondary Science Education program at…

  • Best Science Books of 2019

    Journal Article | March 2020

    a six-mile diameter asteroid hurtling toward our planet at 100 times the speed …

  • Spring Migrations

    Journal Article | April 2020

    of rocky material that originally were part of an asteroid. These meteorites …

  • Why is the Earth round?

    Journal Article | May 2020

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