> ## Content Index
> Fetch the complete content index at: https://www.cascadepbs.org/llms.txt
> Use this file to discover other available public pages before exploring further.

# The Universe Has Been Expanding Since the Big Bang. Just Not How We Thought.
- URL: https://www.cascadepbs.org/show/pbs-space-time/episode/the-universe-has-been-expanding-since-the-big-bang-just-not-how-we-thought-c6k5ck/
- Published: 2026-07-20T14:30:39.000Z
- Updated: 2026-07-20T16:01:00.000Z
- Description: DESI and DES studied dark energy. Together, what can they tell us?
- Author: Cascade PBS Staff
- Tags: PBS Space Time, Season 11, Episode 32, #ZZZ_Episode_14789dd5-ce40-4230-85ab-9ab2cdbb4a15, #episode, #ZZZ_Show_ae70f836-13b6-4c9d-b61f-99f7b8bc29eb, #v1.16

Last year, DESI made headlines when its map of the Universe suggested dark energy, the force driving cosmic expansion, might not be constant. Now, the Dark Energy Survey (DES) has released its final results. Do they confirm DESI’s findings? More importantly, why are different scientific studies far more powerful together than alone? The answer gets to the heart of how science works.