What Does Dark Energy Really Do?

Dark energy, what exactly does it do? Find out in this episode of Space Time! Part 3 in our Dark Energy series. Part 1: Part 2: ____________________________________________________________ Get your own Space Time t­shirt at Tweet at us! @pbsspacetime Email us! pbsspacetime [at] gmail [dot] com Comment on Reddit: Help translate our videos! How does dark energy affect the universe's expansion? Measuring past expansion history should tell us the future expansion without ever having to count any galaxies. To measure this we need to measure the redshift-distance relationship, which we will talk about in detail in this episode. Written and hosted by Matt O’Dowd Made by Kornhaber Brown (www.kornhaberbrown.com) Comments Pravar Parekh Yeshwanth Vejendla Thomas Waclav (Ceasar) Austin Pinheiro ____________________________________________________________ White dwarf supernova simulation from "Three-Dimensional Simulations of the Deflagration Phase of the Gravitationally Confined Detonation Model of Type Ia Supernovae", Jordan et al., 2007, Supernova Cosmology Project: Perlmutter et al. 1999, High-Z Supernova Search Team: Riess et al. 1998,