Documents The Sun. Of medium size by star standards, it is composed mainly of hydrogen (73 percent by mass)...

Slide 1 The Sun Slide 2 Of medium size by star standards, it is composed mainly of hydrogen (73 percent by mass) and helium (25 percent by mass) Slide 3 The rest is made…

Documents Journey to the Centre of the Earth (The structure of iron in the inner core) Lidunka Vočadlo.

Slide 1 Journey to the Centre of the Earth (The structure of iron in the inner core) Lidunka Vočadlo Slide 2 Slide 3 Slide 4 Slide 5 Slide 6 Slide 7 Masters et al., 2000…