Q 4
Question

Padmashree saw the Orion constellation nearly overhead at 8 pm yesterday. When will she see Orion overhead today?

The Orion constellation overhead in the night sky.
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Answer
She will see Orion overhead about four minutes earlier today.

Explanation

  • The Earth revolves around the Sun as it spins.
  • So a star appears in the same spot a little earlier each night.
  • The shift is about four minutes per day.
  • So Orion will be overhead at about 7:56 pm today.
A star rises about four minutes earlier each night.
← Back to concept: 12.2.1 Changing view of night sky from the Earth
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