Planet Earth

Planet Earth is the birthplace of humanity, the cradle of human civilization, and the only known planet in our Solar System that is capable of sustaining life.

Beyond “Fermi’s Paradox” I: A Lunchtime Conversation- Enrico Fermi and Extraterrestrial Intelligence

Welcome back to our Fermi Paradox series, where we take a look at possible resolutions to Enrico Fermi’s famous question, “Where Is Everybody?” Today, we examine the lunchtime conversation that started it all! It’s become a kind of legend, like Newton and the apple or George Washington and the cherry tree. One day in 1950, …

No, a Dinosaur Skull Hasn’t Been Found on Mars: Why We See Familiar Looking Objects on the Red Planet

What is up with the fossils on Mars? Found – a dinosaur skull on Mars? Discovered – a rat, squirrel or gerbil on Mars? In background of images from Curiosity, vertebrae from some extinct Martian species? And the human skull, half buried in photos from Opportunity Rover. All the images are made of stone from …

Elon Musk and the SpaceX Odyssey: the Path from Falcon 9 to Mars Colonization Transporter

In Kubrick’s and Clark’s 2001 Space Odyssey, there was no question of “Boots or Bots”[ref]. The monolith had been left for humanity as a mileage and direction marker on Route 66 to the stars. So we went to Jupiter and Dave Bowman overcame a sentient machine, shut it down cold and went forth to discover …

Exciting Exoplanet News from AAS: How Rocky Worlds are Made; Oceans on Super-Earths

Astronomers from around the world gathered in Seattle today for the 225th meeting of the American Astronomical Society. Although it’s just past noon on the West Coast, the discoveries are already beginning to unfurl. Here are some of the highlights from this morning’s exoplanet session. And the keyword seems to be “water.” A Recipe for …