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Life, Unbounded

Life, Unbounded

Discussion and news about planets, exoplanets, and astrobiology

Exoplanet Size: It’s Elementary

Since quite early in the history of the discovery of planets around other stars it’s been apparent that the likelihood of certain types of planets around a star is related to the abundance of heavy elements in that system...

June 3, 2014 — Caleb A. Scharf

Heads Up! Thirteen Years Of Asteroid Impacts On Earth

Since the Chelyabinsk event in early 2013, when a brilliant meteor fireball streaked across Russian skies and exploded with the energy of thirty Hiroshima bombs, humans have paid slightly more attention to the potential danger of asteroids than before...

April 23, 2014 — Caleb A. Scharf
Copernicus in Cleveland

Copernicus in Cleveland

What is our cosmic significance? Does it even make sense to ask a question like that? If you happen to find yourself in Cleveland, Ohio this coming Thursday evening, and stop by the Cleveland Museum of Natural History at 8pm you can catch me talking about this...

April 14, 2014 — Caleb A. Scharf

What do NYC Streets and Asteroids Have in Common?

                    Fatigue, that’s what. As a particularly frigid winter recedes across the north and east of the United States (we’ve become accustomed to milder weather in past years), the abuse suffered by asphalt roads is becoming apparent...

April 8, 2014 — Caleb A. Scharf

The Unstoppable Extinction And Fermi’s Paradox

There has been a lot of discussion recently about the evidence that we are currently within a period of mass extinction, the kind of event that will show up in the fossil record a few million years from now as a clear discontinuity, a radical change in the diversity of life on the planet...

March 20, 2014 — Caleb A. Scharf

This Is What We Don’t Know About The Universe

In recent days I’ve had some interesting conversations. There’s a giddiness going around, related to an outpouring of science love – the kind you get from President Obama introducing TV science shows, the kind that has wonderful visuals, but is, well, a wee bit simplistic (a sin that none of us could ever, ever be [...]..

March 12, 2014 — Caleb A. Scharf
Rock-Eating Martian Microbes?

Rock-Eating Martian Microbes?

A recently published study of a 30-pound martian meteorite found in Antarctica suggests the presence of indigenous carbon-rich material, ancient water erosion, and a number of tiny structures that resemble the sort of features that we see rock-eating microbes leaving in basaltic glasses here on Earth...

February 28, 2014 — Caleb A. Scharf

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The Essential Guide to the Modern World

The Essential Guide to the Modern World