31: The universe is made of dander
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What’s outside our solar system? Where does the solar system end? (ABC, Australia) Where in the universe is Voyager? The surprising showdown over where our solar system ends (TIME) What defines the boundary of the solar system? (NASA) Live tracking: Where are the Voyager probes now? (NASA) Voyager 1 is travelling at ~17 km/second (Wikipedia) It’s believed that Voyager 1 is either in interstellar space or pretty close to it (the heliopause) - that’s the furthest we’ve sent anything (Wikipedia) In about 30,000 years, Voyager 1 will have passed through the Oort Cloud & in 40,000 years it will pass within 1.6 light-years of the star Gliese 445 (Wikipedia) The infamous ‘pale blue dot’: Earth as seen by Voyager 1 from 6 billion km (Wikipedia) What is the heliopause? (Encyclopaedia Britannica) What is the heliopause? (Southwest Research Institute) The heliosphere: A proper sciencey paper (Max-Planck-Institut für Aeronomie) What is the Kuiper Belt? A belt of icy bodies beyond Neptune (Cosmos, Swinburne University)…