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Astronomy - Coggle Diagram

- - - - origin and early history
        
        Trappist-1 system
        
        7 terrestrial planet (類地行星) in habitable zone (宜居帶)
        
        = Goldilocks Zone
        
        Gliese 581 b/c/d/e...... (red dwarf)
    - - Titan 土衛六, Enceladus 土衛二
    - - IO, Europa, Ganymede, Callisto (Galilean moon)
  - - - 78% N2 & 21& O2 (now)
    - - compare with 十億年前地球
    - - o2 and ozone
    - - volcanic or life produce
        
        metabolic的副產品
    - - volcanic or life produce
        
        decompose fast (ammonia also)
    - - liquid of methane, cycle of evaporation, and precipitation
    - - 冰層底下的液態水，bacteria
  - - - emission nebulae
        
        red color 自己發光
      - Reflection nebulae
        
        blue color 反射光
      - dark nebulae
        
        dark hole
    - - sunspot
        
        low
        
        deep solar minimum
        
        11週年循環
        
        Dalton minimum 這類會破壞solar minimum/maxima 的循懷
        
        higher
        
        solar maxima
      - Low magnetic activity
        
        Minimum 太陽極小期
        
        Maunder (1645-1715)/ Dalton (1790-1830)
      - conveyor belt
        
        magnetic field 改變的方式，隨著belt 流動
- - - - doppler effect
        
        blue shift 遠離exoplanet
        
        bed shift 靠近exoplanet
    - - 在地球與其恆星中間，透過計算陰影算出大小跟軌道
    - - slowly destroyed the small galaxy
  - - - 木衛 IO (內部摩擦加熱)
    - - the moon