Look Who it Was Random video

Telescopes as Time Machines | Lindsey Bleem | TEDxYouth@Hinsdale

199 views · Published 3 October 2018 · 12:21 · Indexed 26 September 2026

Channel: TEDx Talks · 2018 · Nonprofits & Activism

Watch on YouTube

The field of astrophysics has expanded faster in recent years than the galaxies it studies. At the forefront of astrophysics lies the question of how and when the universe truly began. In this TEDx Talk, Dr. Lindsey Bleem pinpoints her latest research experiments using clusters of galaxies to explore cosmological theories, take a look back in time, and address possible modifications to EInstein’s theory of gravity. Does the observed accelerating expansion of the universe require a modification to our theories of gravity or does there exist some new form of energy, so-called ‘Dark Energy?’ Dr. Bleem seeks to answer such questions by studying of clusters of galaxies—which are amongst the most massive objects in the Universe.  In her presentation she will give a brief introduction to this work and describe how such research has led scientists to build observatories at some of the most remote sites on Earth. Dr. Bleem received her PhD from the University of Chicago in 2013 and BA from Kenyon College in 2005. This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at https://www.ted.com/tedx

More from this channel