# Cosmic Queries Unleashed: Gravitons, Expanding Universes & the Weight of Space Travel

An episode of [Space Nuts: Astronomy Insights & Cosmic Discoveries](https://invisiblenetwork.ai/podcast/1080090608), 6 Jul 2026, 33 min.

Audio: https://dts.podtrac.com/redirect.mp3/pscrb.fm/rss/p/op3.dev/e/api.spreaker.com/download/episode/72825309/cosmic_queries_unleashed_gravitons_expanding_universes_the_weight_of_space_travel.mp3

Universe, and WeightlessnessIn this Q&A edition of Space Nuts, Andrew Dunkley and Professor Fred Watson tackle an array of intriguing listener questions that delve into the complexities of the universe. From the implications of an expanding universe to the elusive graviton and the experience of transitioning from weightlessness back to Earth's gravity, this episode promises to enlighten and entertain.Main Topics: • The potential for a future black void in our night sky as the universe continues to expand. • Understanding the graviton: Why do some physicists believe in its existence despite its elusive nature? • Exploring the properties of photons and their wave-particle duality. • The impact of long-term weightlessness on astronauts and their return to normal gravity. • Listener feedback and inspiring stories about engaging younger generations in astronomy. Timestamps: • 00:00 - Introduction to today's Q&A session and listener engagement • 02:30 - Clint's question about the future of the night sky and cosmic expansion • 12:45 - Alan's deep dive into gravitons and their connection to gravity • 28:00 - Misty's inquiry about the wave function of particles and photons • 40:15 - Casey's question on the effects of returning to gravity after weightlessness • 50:30 - Final thoughts and encouragement for listener questions Resources & Links: • Support Space Nuts Join Andrew and Fred Watson for another fascinating exploration of the cosmos, and don't forget to send in your questions for future episodes. Keep your curiosity alive and continue to look up!

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