Nogginson Rossouw, professor of Astronomy at his university, set an exam a few days ago. However, it seems that all of the students who have taken the exam, wrote strange answers. The professor asked them to write short notes on 8 astronomy related topics and all of them have given weird answers. For example, one of the students, Drew Plater's answer script looks like this-

  1. A measuring instrument and unit.
  2. Organic compound found in our body.
  3. A flat surface.
  4. A hybrid between a primate and a carnivore?
  5. Wooden case used for storing goods.
  6. Divide and analyse a sentence.
  7. Cost for a trip to the sun?
  8. Humorous radiance?

Assuming that the students didn't purposefully perform vandalism, What were the topics the good professor asked his students to write notes on and why have they produced such strange results?


The students have produced strange results because

the topics are all missing a letter.

Topic 1:


Topic 2:


Topic 3:


Topic 4:

ap(h)elion (From @Takeshi)

Topic 5:


Topic 6:


Topic 7:

solar f(l)are

Topic 8:

co(s)mic ray

  • $\begingroup$ That was fast, now fill in the rest. $\endgroup$
    – Rohcana
    Sep 29 '15 at 22:09
  • $\begingroup$ Is topic 4 omniverse? $\endgroup$
    – Maxqueue
    Sep 29 '15 at 23:10
  • 4
    $\begingroup$ Topic 4: Ap(h)elion? $\endgroup$
    – Takeshi
    Sep 29 '15 at 23:41
  • 1
    $\begingroup$ I keep trying to get binary search and binary star to line up ... $\endgroup$ Sep 30 '15 at 0:24
  • $\begingroup$ The clue for topic 6 might have been too vague, I'm updating the clue, but I feel this will be too easy now. $\endgroup$
    – Rohcana
    Sep 30 '15 at 23:10

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