The Universe Is Expanding, but It's Also Accelerating

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The universe is expanding, but it's also accelerating in its expansion. This dark energy will render the universe so large that all the galaxies of the night sky will have accelerated beyond our horizon. Everything we know about the history of the universe comes to us from these galaxies. If they accelerate beyond our horizon, the next generation of cosmic explorers will only have the stars of the milky way to think about. One by one, the stars in the night skywill disappear because they are all moving away from us. And eventually it will be completely blank. We will have no access to the information from the beginnings of the universe,. Because it will moved away so fast that we can't see it any

This week we have another longform episode! David got a little obsessed with the James Webb Space Telescope (JWST) a few months ago and spent hours and hours researching and talking to experts so that he can try to explain it here on the podcast for Marques and Andrew. This one is a little dense but if you're even remotely interested in the mysteries of our universe this one is for you. David explains why the JWST is such a big deal and what we hope to discover once it begins sending back pictures.

Special thanks to:

Paul Geithner

Dr. Jonathan McDowell

Dr. Peter Gao

Tim Dodd

Sources:

How James Webb Orbits Nothing

Webb vs Hubble (NASA)

Fine Guidance Sensor (NASA)

JWST FAQ (NASA)

Where is Webb? (NASA)

Webb Orbit (NASA)