Tag Archives: gamma-ray

Periodic Table – Where Your Elements Came From

“The hydrogen in your body, present in every molecule of water, came from the Big Bang. There are no other appreciable sources of hydrogen in the universe. The carbon in your body was made by nuclear fusion in the interior … Continue reading

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Fermi Epicycles: The Vela Pulsar’s Path

I saw this picture on APOD today, and fell in love with it. APOD’s explanation of what it is: “Exploring the cosmos at extreme energies, the Fermi Gamma-ray Space Telescope orbits planet Earth every 95 minutes. By design, it rocks to the north and … Continue reading

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