Is it Halloween yet? This week, Alex, Kiersten, and Sabrina zoom out to stare at the spookiest voids on the most massive scales. Alex tells us how we can use baryonic acoustic oscillations, or BAOs – the astrophysical counterpart to the delicious buns – to study the shapes of these voids. Sabrina turns up the power for her space sound, and we turn on the lights while listening to Kiersten describe a chilling cold spot in the CMB.

Astrobites:

https://astrobites.org/2022/06/11/stare-into-the-void/

https://astrobites.org/2021/12/21/eridanus-supervoid/

Space Sounds: 

https://www.matrix441.eu/2020/07/cmb-anisotropy/