#The time warp how to
We’ve used tree rings to measure these links since we learned how to study radioisotopes in the middle of the 20th century we do the same with rocks and layers of ice deep below Antarctica. Scientists study tree rings for evidence of solar storms and supernovas in order to better understand the cycles of stars and how their lives and their deaths impact us. However distant and however ancient, seemingly random occurrences such as the death of Vela - a perfectly average star - and the shudder it caused on this average rocky planet are evidence of our inextricable link to everything in the cosmos, including the passage of time. Scientists studied the radioisotopes of the tree’s rings and found a surge of radiation 14,000 years old. Hundreds of years after that, in Tasmania, a dead tree was discovered, turned by time into a log and buried under sediment. It took several years for the cosmic rays to permeate our atmosphere and settle to the ground, where they were absorbed into trees, ocean coral, and lakes around the planet. Vela’s death bled into the interstellar medium, blasting cosmic radiation out in every direction.įor 800 years, the guts of this star traveled from its location in the Milky Way galaxy toward Earth. Its core collapsed first and then, in a violent burst, propelled the shattered star’s body out into space. Fourteen thousand years ago, a star called Vela died.
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