चन्द्र ग्रहण

thumb|200px|right|chandr grahan
Moon Eclipse chandrama aur soory ke bich prithvi ka ana hi chandr grahan kahalata hai. chandr grahan tab hota hai jab soory v chandrama ke bich prithvi is tarah se a jata hai ki prithvi ki chhaya se chandrama ka poora ya aanshik bhag dhak jata hai aur prithvi soory ki kiranoan ke chaand tak pahuanchane mean avarodh laga deti hai. to prithvi ke us hisse mean chandr grahan najar ata hai. chandr grahan do prakar ka najar ata hai.

1. poora chandrama dhak jane par sarvagras chandragrahan .
2. aanshik roop se dhak jane par khandagras (upachchhaya) chandragrahan lagata hai. aisa keval poornima ke din sanbhav hota hai, isaliye chandragrahan hamesha poornima ke din hi hota hai.

prithvi ki chhaya soory se 6 rashi ke antar par bhraman karati hai tatha poornamasi ko chandrama ki chhaya soory se 6 rashi ke antar hote hue jis poornamasi ko soory evan chandrama donoan ke aansh, kala evan vikala prithvi ke saman hote haian arthat ek sidh mean hote haian, usi poornamasi ko chandr grahan lagata hai.

panne ki pragati avastha

adhar

prarambhik

madhyamik

poornata

shodh