If the moon were bigger, at what point would it be deemed a planet and the earth and 'moon' a 'binary planet' system?/ 
Derryck Morton. 
 - Singapore:  JSIM Education,  May 2022. 
 - 86 page. 
 - BBC Earth.  No. 6.  Do you know?  Vol. 14. .
<br/><br/><label>ISSN: </label>2737-5560 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Moon.
<br/><br/><label>Dewey Class. No.: </label>BBC Earth M8461 May 2022