Ask Ethan: Is the Universe's expansion accelerating or not?

Ask Ethan #6: The Center of the Universe

Ask Ethan: Will The End Of Our Universe Give Rise To A New One? - Big Think

New Model Raises Doubt About the Composition of 70% of Our Universe – Dark Energy May Simply Not Exist!

What is Dark Energy? Inside our accelerating, expanding Universe - NASA Science

Ask Ethan #58: What is dark energy?, by Ethan Siegel, Starts With A Bang!

Ask Ethan: Is the Universe expanding faster than expected?, by Ethan Siegel, Starts With A Bang!

Ask Ethan: What drives the expansion of the Universe? - Big Think

Ask Ethan: What drives the expansion of the Universe? - Big Think

Ask Ethan: Why will the Milky Way and Andromeda collide?

Ask Ethan: Is The Universe Expanding Faster Than Expected?

Ask Ethan #64: What happens to matter as the Universe expands? (Synopsis)