Not everyone thinks the universe had a beginning.
Cosmologists used to think the universe was totally timeless: no beginning, no end. That might sound mind-melting, but it’s easier on the scientific brain than figuring out what a set starting point would mean, let alone when it would be. So some physicists have cooked up alternative cosmological theories that make time’s role seem a little less important. The concepts are as trippy as those black-light posters you had in college. Wait a minute…
FLOWERS OF THE MULTIVERSE
Esta historia es de la edición September - October 2017 de Popular Science.
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Esta historia es de la edición September - October 2017 de Popular Science.
Comience su prueba gratuita de Magzter GOLD de 7 días para acceder a miles de historias premium seleccionadas y a más de 9,000 revistas y periódicos.
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waste watchers
YOU CAN TURN FOOD SCRAPS INTO FERTILIZER IN ALMOST ANY CONTAINER. THESE BINS USE THEIR OWN METHODS TO ENCOURAGE THE PROCESS, BUT BOTH KEEP BUGS AND STINK AT BAY.
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LEARNING TO PEDAL IS NO EASY FEAT.
