Meteors – Shooting stars – Astronomy
Lyrid meteor shower What is a meteor? Meteors or meteorites are bits of rock (like granite) and ice - usually a mixture of rock and iron and nickel but sometimes just rock or [...]
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08, 2017
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06, 2017
What happened in the Cretaceous Period?
Volcano erupting When was the Cretaceous period? During the Cretaceous period, beginning about 145 million years ago, the continents continued to drift away from each other. Plate tectonics Back to [...]
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06, 2017
What is iron? Atoms, elements, chemistry
Diagram of an iron atom When a red giant star finishes changing all of its helium into carbon and oxygen, it then starts to turn the carbon and oxygen atoms into iron atoms. Iron [...]
