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

The universe is expanding, but what exactly is it expanding into?

Ask Ethan #60: Why is the Universe's energy disappearing? (Synopsis)

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

Ask Ethan: How does dark energy accelerate the Universe?, by Ethan Siegel, Starts With A Bang!

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

Ask Ethan: Can The Universe Still End In A Big Crunch?

Ask Ethan #52: How long has the Universe been accelerating?, by Ethan Siegel, Starts With A Bang!

Ask Ethan #83: What if dark energy isn't real? (Synopsis)

Ask Ethan: Does Our Universe Have More Than 3 Spatial Dimensions? - Bluefields

Einstein's Puzzle: Unraveling the Mystery of the Universe's Accelerating Expansion

Ask Ethan #52: How long has the Universe been accelerating? (Synopsis)

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