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By Paul M. Sutter on September 3, 2019 in
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What’s it like to fall into a black hole (again)? What does the outside universe look like?

By Astronomy Cast on September 2, 2019 in
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This week we wonder if the Universe is going to collapse and then expand again, how satellites can have such different velocities, and the size of the observable Universe.

By Sabrina Stierwalt on August 28, 2019 in
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Our universe is 13.8 billion years old,. How do astronomers arrive at such an enormous number? more with Sabrina @qdteinstein @quickdirtytips at #365daysOfAstro

By Paul M. Sutter on August 20, 2019 in
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What is chaos theory? How can something be both deterministic and unpredictable?

By Paul M. Sutter on June 18, 2019 in

What’s the deal with redshift? How can we actually interpret velocities when it comes to cosmic expansion?

By Tony Darnell on May 18, 2019 in

Book Review: “Universal: A Guide to the Cosmos” by Brian Cox & Jeff Foreshaw

By Paul M. Sutter on May 16, 2019 in
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It turns out that the universe is kind of big. If the universe is important are we immortal? Did life happen on Venus and Mars?

By Paul M. Sutter on May 7, 2019 in
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What is the “cosmic calendar”? What are some important scales in the universe?