<span>Because iron is dense - a small volume or amount weighs a lot compared to other materials</span>
        
             
        
        
        
The solar wind is created by the outward expansion of plasma (a collection of charged particles) from the Sun's corona (outermost atmosphere).
Hope this helps :).
        
             
        
        
        
Thats whats called the Ecliptic. 
        
                    
             
        
        
        
Answer:
The most highly developed geocentric model was that of Ptolemy of Alexandria (2nd century).