HardScience
You can find me in Mercury, Earth, Mars, and Jupiter. But not Neptune or Venus.
Riddle
You can find me in Mercury, Earth, Mars, and Jupiter. But not Neptune or Venus.
Choose an answer
A.Gas
B.A Solid Core
C.Oxygen
D.The letter R
Hint: It's a 3-word phrase with 10 letters, starting with "T".
Answer
The letter R
Why this is the answer
This is a wordplay riddle; the letter 'R' appears in the names of the first four mentioned planets but not the others.
This riddle is filed under Science Riddles and rated Hard.