origins of our solar system

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Public Speaking

Andrea Moralesにより

Saving Costa Rica's Endangered Frogs

Mindomo Teamにより

Palaeolithic

Blanca Gaunaにより

ANGLO-SAXONS

Andrea Brondolinにより

our origins

expanding universe

big crunch

Hubble's discoveries

red shifted galaxies

big bang

hydrogen and helium predominance

backgroudn radiation

14 billions years ago

life on earht

darwin's theory

evolution

luca

habitable planet earth

magnetic field

appearance of water

desent from stars

formation of sun

life cycle os stars

manufacturing of elements

fusion