Universe Today Podcast

[Q&A] True Color of Sunspots, Saving the Earth, Identifying Interstellar Objects

March 7th, 2023  •  36 mins 53 secs  •  Download (52.2 MB)  •  Link with Timestamp

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How many stars did our radio signals reach? How to visualize the expansion of the Universe? Can we save the Earth from the Sun's red giant phase? How can we tell that an object has interstellar origin? All this and more in this week's Q&A!