Class VII

Each kind of star radiates different mixtures of
  1. visible light only
  2. invisible light only
  3. visible and invisible light
  4. sound and waves
For all hydrogen to get used up, it will take about more
  1. 5,000 years
  2. 5 million years
  3. 5 billion years
  4. 5 trillion years
Rarest type of galaxy is
  1. peculiar galaxy
  2. lenticular galaxy
  3. irregular galaxy
  4. spiral galaxy
In ancient times, people divided bright stars they saw into
  1. Horoscopes
  2. Constellation
  3. Prominence
  4. Ptolemy
Our Universe began when this small mass
  1. expanded
  2. exploded
  3. extended
  4. evaporated
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