What can be seen at night but seems to disappear when the sun comes up?
The answer is the stars.
Stars are present in the sky during both the day and night, but during daylight the Sun makes the sky so bright that most stars are no longer visible to the naked eye.
When darkness returns, the sky becomes dark enough for their light to stand out again.
That is why the riddle says they “disappear” when the Sun rises. They have not actually gone anywhere—they are simply hidden from our view by the brightness of daylight.
The clue is based on what we observe rather than what is physically happening.
Answer: The stars.
It is a simple riddle based on one of the most familiar changes between daytime and nighttime.
