Description

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Science

Beginner

Astronomy

Explore the sky, the Solar System, stars, and galaxies. Learn how observations and physical models help us understand the universe.

10 lessons

Lessons

  1. 1

    Recording the night sky

    3 min

  2. 2

    Why day turns to night

    3 min

  3. 3

    An orbit and a year

    3 min

  4. 4

    What causes the seasons

    3 min

  5. 5

    Understanding Moon phases

    3 min

  6. 6

    When eclipses happen

    3 min

  7. 7

    Our Solar System

    3 min

  8. 8

    Stars and planets

    3 min

  9. 9

    Gravity and orbital motion

    3 min

  10. 10

    Light-years measure distance

    3 min