Brian Koberlein is an astrophysicist and physics professor at Rochester Institute of Technology. He writes about astronomy and astrophysics on his blog "One Universe at a Time," as well as on Google+. You can follow him on Twitter @BrianKoberlein

Why Some Stars Are Really Just Super Hot Vacuums

One of the common tropes in astronomy is a comparison of our Sun to other stars. It’s a great way of showing just how tiny we are. Betelgeuse, for example, has a radius more than 1,100 times that of...

May 21, 2015

Water on Alien Worlds: Ganymede

We know Enceledus has liquid water by its cryovolcanoes. There are other ways we can tell if a moon has a water interior, but one of the more interesting methods is to look at a moon’s aurora. This...

May 8, 2015

Does A Great Filter Solve the Fermi Paradox?

In this article, we covered the lack of evidence for extraterrestrial intelligence. While there are lots of possible reasons why such evidence isn’t forthcoming, the seeming abundance of...

April 30, 2015

What are the Zodiac Constellations?

The most famous constellations (other than perhaps Orion and the Big Dipper) are the Zodiac constellations. These are twelve constellations that lie along the ecliptic, which is the apparent path the...

April 23, 2015

Scientists Propose A Way We Might be Able to Detect the Graviton

A recent article in Physical Review Letters proposed a new way to detect gravitons. The setup could be done in a lab, which is in stark contrast to the usual view that you’d need a Jupiter-mass...

April 20, 2015

Abiogenesis: Where Did Life Begin?

One of the big unsolved questions in chemistry and biology concerns the origin of life on Earth. One of the more speculative ideas on the matter is known as panspermia, or idea that life arose...

April 10, 2015

Understanding Quantum Mechanics: What is Electromagnetism?

On the face of it, both electricity and magnetism are remarkably similar to gravity. Just as two masses are attracted to each other by an inverse square force, the force between two charged objects or...

March 24, 2015

What is Gravity Really?

Gravity is perhaps the best known of the four fundamental forces. It’s also the one that’s easiest to understand. At a basic level, gravity is simply the mutual attraction between any two masses....

March 1, 2015

Popular Press Announces: The Big Bang Didn’t Happen!

Did the big bang really happen? Yes, despite recent claims to the contrary.  A new paper in Physical Letters B has the popular press wondering if there was no big bang, but the actual paper claims no...

February 10, 2015

Black Holes: Lies My Teacher Told Me

Yesterday I got an email outlining why black hole can’t possibly exist. Those of you who are regular readers might be quick to point out that black hole most certainly exist, but the author is...

January 31, 2015
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