Starts with A Bang Podcast #86 – Stars in the Universe

Begins with A Bang Podcast #86 – Stars in the Universe – Think Big Skip to content

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It is the stars closest to us that hold the key to unleashing the potential for life in star systems throughout the universe.

Star density maps in the Gaia catalog of nearby stars. The sun is in the center of both maps. The regions of higher density of stars appear; These correspond to the known constellations (Hyades and Coma Berenices) and the moving constellations. Each dotted line represents a distance of 20 parsecs: about 65 light years.

(Credit: ESA/Gaia/DPAC – CC BY-SA 3.0 IGO)

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  • Although there are trillions of galaxies in the universe, we have only been able to measure individual stars in the nearest few galaxies, and only faint stars in our Milky Way.
  • If we want to understand the stars that exist, and the possibilities for life, we have to look nearby: at the nearest stars, otherwise we’ll sample a biased population.
  • Here’s how we understand the opportunities for life and conditions on planets throughout the universe, simply by looking in our own backyard.

Throughout the universe, we see stars and galaxies everywhere we look. But when we look to greater and greater distances, we see only the light that is easiest to see: light is one of the brightest and most visible things. But the more numerous objects are just the opposite: less luminous, smaller and less massive. How can we hope to find and index them all if they are hard to find?

The answer lies in measuring the stars closest to us. If we can measure stars still in our own backyard, catalog them and make as complete a census as possible, we can then combine what we know about stars, starlight, and the environments in which new stars form to reconstruct exactly what we believe. It is there: not only here and now, but everywhere else and all through cosmic time.

Travel around the universe with astrophysicist Ethan Segel. Subscribers will receive our newsletter every Saturday. everything is ready!

Here to show us how this attempt to catalog and categorize stars in the universe, I am very pleased to welcome Georgia State University doctoral candidate Elliot Frigmott to the exhibition, which takes us on a fascinating journey to the edge of our knowledge, and from there we’ll look on the horizon for what might come next. Enjoy the latest episode of the Starts With A Bang podcast!

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Our model of the universe, which is dominated by dark matter and dark energy, explains almost everything we see. approx. That’s what’s left.

LIGO can detect overtones and mergers of the least massive, but not the largest, black holes. Here’s how pulsars can help.

The James Webb Space Telescope is about to begin its science operations. This is what astronomers are excited about.

For a thousand light-years in all directions, there is a “bubble” in the center of which is the Sun. Here’s the story behind it.

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