Q1 of 50 Page 17

Why do we classify the sun as a star?

Sun is classified as a star because it
  • has its own source of energy.
  • is continuously emitting huge amount of heat and light.
  • has a life period. It was born 5 billion years ago and is expected to glow for another 5 billion years.

    • More from this chapter

    All 50 →
    2 What are celestial bodies? Name some of these. 3 Why do celestial objects appear to move across the sky from east to west? 4 Stars are not visible during the day. Explain. 5 Define the unit in which astronomical distances are measured.