Astronomy Regents Review Crossword

Complete the crossword, then click on "Check" to check your answer. If you are stuck, you can click on "Hint" to get a free letter. Click on a number in the grid to see the clue or clues for that number.

       1        2    
   3              
     4    5      6      
               
   7      8          
               
         9        
    10             
   11             12   
               
 13        14    15        
16                 
        17         
               
18