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Ethan's Halloween photo Ethan Siegel is a theoretical astrophysicist who currently teaches at Lewis & Clark College in Portland, OR. You can learn about him, contact him, or just enjoy the site.

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June 5, 2010: Ethan will be at the Beard Team USA Nationals in Bend, OR. I've been growing one since Thanksgiving; wish me luck!

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June 30, 2009

The Last 100 years: 1969 and the Final Frontier

Category: Solar System

There's no doubt that physics and astronomy was booming in the 1960s. The model that protons and neutrons were made of quarks was proposed and validated, the most powerful nuclear device of all time was detonated, and the Cosmic Microwave...

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June 29, 2009

Carnival of Space #109 is live!

Category: Astronomy

Last week, I was lucky enough to get to host the Carnival of Space. This week, the honor goes to Jennifer Ouellette at Twisted Physics, and my article on the 1950s and Fred Hoyle gets top billing! There are a...

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Water in Space: What Happens?

Category: Physics

The Earth is one of those extremely rare, special places in the Universe where water can exist, stably, as a liquid. So much of it exists here on Earth, that if you were to add up all the oceans on...

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June 27, 2009

Weekend Diversion: The Real Rosie the Riveter

Category: Random Stuff

All the day long whether rain or shine she's a part of the assembly line she's making history working for victory Rosie the Riveter! One of the most iconic images, spawned by this song: is that of Rosie the Riveter....

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June 26, 2009

How stable are skyscrapers?

Category: Physics

Or, to put it as one of my readers/questioners did, Why doesn't the Space Needle, a top-heavy skyscraper, ever tip over and fall? This is reasonable, and there's precedent for this. After all, the Leaning Tower of Pisa was falling...

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June 25, 2009

Making the Elements in the Universe

Category: Physics

Earlier this week, I wrote about how the heavier elements in the Universe were made. Specifically, that they are made in stars. These stars then explode in a variety of ways, enriching the Universe with these heavy elements, and allowing...

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June 24, 2009

Ethics Question: A Man's Rights

Category: Right and Wrong

There is a long history of oppression of women on many fronts in our society. Socially, politically, economically, and legally, among others. There are a number of very good bloggers here who often address gender issues, and I'm not typically...

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June 23, 2009

The Last 100 Years: 1950s & The Tragedy of Fred Hoyle

Category: Stars

In the 1940s, the Big Bang theory was first conceived and detailed. But, to quote Niels Bohr, We are all agreed that your theory is crazy. The question which divides us is whether it is crazy enough to have a...

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June 22, 2009

Carnival of Space #108: Solstice Edition!

Category: Astronomy

We have a treat for you this week: Starts With A Bang gets to host this week's Carnival of Space! We take the best space and astronomy posts from around the internet and pull them together in one great extravaganza!...

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June 21, 2009

Weekend Diversion: The Steps of Man

Category: Random Stuff

Somewhere in my mind, I like to try and construct a timeline of all of human history. Yes, there's the obvious stuff, like the discovery of fire, the learning of what foods will and won't kill you, the domestication of...

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