Astronomy Crossword
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
 
 
Down: 1) >98% H and He2) 11.5 billion year life 3) out of 20%4) out of 71.3%6) G2, T=5780k and 15557000k at center8) colored lines on a black background9) black lines on a rainbow background Across: 5) Spectra also provide T, % composition, Vradial, Vrotation and stellar spectral class. 7) a 22 year sunspot cycle.(core=28 days)10) 4.8311) A rainbow12) 3 neutrino
 

 

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