The first hint to crack the puzzle "Small, old, cool star, can't be seen with the eyes" is:

It is a word which contains 8 letters

The second hint to crack the puzzle "Small, old, cool star, can't be seen with the eyes" is:

It starts with letter r

The third hint to crack the puzzle "Small, old, cool star, can't be seen with the eyes" is:

It ends with letter f

Looking for extra hints for the puzzle "Small, old, cool star, can't be seen with the eyes"

Click on any empty tile to reveal a letter

The answer for the puzzle "Small, old, cool star, can't be seen with the eyes" is: