antennae

The Blue Marble Dec 7 1972 Apollo 17 NASA

Video Episode 21 | Earth’s Mass Extinctions

Earth's mass extinctions were Ordovician, Devonian, Permian, Triassic & Cretaceous which killed the dinosaurs. Now we are on to the 6th one called the Holocene.

Radio Antenna

Video Episode 14 | All About Radio!

It's all about radio, radio waves, radio transmission, radio astronomy. And electromagnetic radiation, Marconi, Hertz and Maxwell, pioneers of radio.

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