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

Universe Today Podcast · Mar 7, 2023 · 36m

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!🦄 Support us on Patreon: https://patreon.com/universetoday00:00 Start01:02 [Tatooine] If the Sun is white, are sunspots really black?05:19 [Coruscant] How many stars did our radio signals reach?08:51 [Hoth] How do gravitational assists work?11:43 [Naboo] How to visualize the expansion of the Universe?13:35 [Kamino] How will the Mars sample return mission…