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Beyond Earth

The big picture

Beyond Earth — seven things to carry with you
IdeaWhat to remember
Star, planet, MoonA star makes its own light. A planet or the Moon reflects the Sun's.
The MoonIts lit half never changes. Only how much we see changes.
Waxing and waningFor about 15 days the bright part grows (waxing). Then it shrinks (waning).
The Sun is a starThe same kind of object as every star, just much closer.
The solar systemEight planets, each at its own distance. Not evenly spaced.
Finding your wayThe Pole Star sits almost still. Facing it, you face north.
Looking carefullyEyes see a lot. A telescope gathers light and enlarges small things.

Now open your NCERT book to Beyond Earth. You have tried every idea.

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This track

  1. 0 Start here
  2. 1 A star, a planet, or the Moon?
  3. 2 The Moon does not change shape
  4. 3 Waxing and waning
  5. 4 The Sun is a star
  6. 5 Eight planets, eight real distances
  7. 6 The sky can tell you north
  8. 7 What a telescope really adds
  9. 8 The big picture
  10. 9 Track quiz

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