The best place to look for aliens is in a galaxy far, far away.

The Search for Extraterrestrial Intelligence (SETI) has traditionally used radio telescopes to search nearby stars. Excellent. But I really loved a new study published last week by Griffeth, et. al, which differs from traditional radio searches in two ways. First, Griffeth and team did not look for direct signals sent by extraterrestrial intelligences (ETs). Instead they looked for excess… Continue reading The best place to look for aliens is in a galaxy far, far away.

Snail mail to the stars

“The Post Office Is Dying Because We Don’t Need It Anymore” says a recent headline. And yes, mail volume decreased 22% in the past five years. Yet mail is still being used for that most modern of tasks, moving extremely large computer files. In computer jargon, moving data by carrying a computer hard drive around… Continue reading Snail mail to the stars

Life on Wet Planets

About 4 billion years ago, Venus (far left), Earth (middle), and Mars (far right), all had water. The relative planet sizes above are roughly to scale, though how they looked that long ago is speculation. But just knowing a time existed when we had three planets in our own solar system with liquid water is… Continue reading Life on Wet Planets

Closing the astronaut window. Robots onward.

The recent release of the wonderful mars rover pancam shot above shows how real space exploration is being done. I used to enjoy science fiction books and movies about astronauts doing space exploration, but the tropes involved just don’t ring true anymore. Those tropes were formed around the time of the Apollo program and haven’t… Continue reading Closing the astronaut window. Robots onward.