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#418: From Cosmic Drag to Holographic Hype: Unraveling the Mysteries of Space Travel

#418: From Cosmic Drag to Holographic Hype: Unraveling the Mysteries of Space Travel

Space Nuts: Astronomy Insights & Cosmic Discoveries vor 2 Jahren

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26:46

Prepare to have your mind stretched to the cosmic limits in this
Q&A episode of Space Nuts. Andrew Dunkley and Professor Fred
Watson answer a selection of thought-provoking questions sent in by
our curious listeners, tackling the mysteries of light, the concept
of a holographic universe, and the challenges of interstellar
travel.

First up, Alan from Medicine Hat, Canada, wonders how far light
from an LED with one candle power can travel before it becomes
undetectable by space telescopes. The duo discusses the persistence
of light and the factors that influence our ability to observe its
journey through the cosmos.

Next, Charles probes the perplexing theory of a holographic
universe, questioning whether our three-dimensional experience is
merely a projection from a two-dimensional boundary. Andrew and
Fred unravel the theoretical underpinnings of this mind-bending
concept and its implications for our understanding of
reality.

The conversation then accelerates to relativistic speeds with Craig
from sunny Merimbula, NSW, asking how fast a spacecraft must travel
before encountering drag in the sparse medium of space. They also
consider the potential hazards of high-speed collisions with cosmic
dust and gas, pondering the aerodynamic and navigational challenges
that would arise.

From the eternal voyage of light to the enigmatic nature of our
universe and the theoretical speed limits of space travel, this
episode of Space Nuts is a cosmic conundrum of astronomical
proportions. Tune in as Andrew and Fred navigate through the
universe's most intriguing puzzles.

00:00:00 Andrew Dunkley answers questions about light on this
edition of Space Nuts

00:01:38 First question comes from Alan from Medicine Hat,
Canada

00:03:44 There is no known limit to how far light can travel

00:06:03 Charles: What do you think of the theory that we live in a
holographic universe

00:13:46 If all universes are expanding, would they eventually
overlap

00:17:41 Craig Miller calls from sunny Merimbula in New South
Wales

00:19:03 How much speed would drag depend on the concentration of
particles in space

Support Space Nuts and join us on this interstellar quest by
visiting our support page. Your contributions help us
continue our mission to explore the enigmas of the universe.

Clear skies and cosmic queries await on Space Nuts, where we make
the cosmos your backyard.

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