Sending greeting cards to aliens is hardly a new idea. In 2005, Craigslist solicited messages for broadcast to space by a transmitter… — Seth Shostak Copy Share Image
The Moon is a ball of left-over debris from a cosmic collision that took place more than four billion years ago. A… — Seth Shostak Copy Share Image
In the four years since its launch, Kepler has chalked up 122 new and confirmed planets. It's also caught the scent of… — Seth Shostak Copy Share Image
Are two eyes, four appendages and an upright posture really essential for any creature that can ace the galactic SAT's? Maybe not.… — Seth Shostak Copy Share Image
Consider: Life arose on Earth close to four billion years ago. Four billion years of slithering, swimming, and soaring life forms. But… — Seth Shostak Copy Share Image
Consider: The human genome consists of about 3.3 billion base pairs. Since there are only four types of pair, that amounts to… — Seth Shostak Copy Share Image
Studying Sol's interior by looking for analogous patterns on its incandescent face is known as helioseismology, an active - if largely unpronounceable - research… — Seth Shostak Copy Share Image
Some pundits have proposed that the aliens have come here to breed with us. Apparently, too much bike riding or something similar has rendered… — Seth Shostak Copy Share Image
As far as I can tell, the only unambiguous consequence of the claimed invasion of Earth by beings from another star system has been… — Seth Shostak Copy Share Image
Look, science is hard, it has a reputation of being hard, and the facts are, it is hard, and that's the result of 400… — Seth Shostak Copy Share Image
Give consideration to the fact that alien astronomers could have scrutinized Earth for more than 4 billion years without detecting any radio signals, despite… — Seth Shostak Copy Share Image
In a movie, it's often important to have aliens whose gestures and facial expressions can be 'read' by humans. And in the days before… — Seth Shostak Copy Share Image
Sure, nobody will make a fortune if we figure out why the Big Bang happened. But just about everyone would like to know. — Seth Shostak Copy Share Image
If you could drive straight down, into a tunnel bored through the crust of the planet, you'd hit this molten mess in about an… — Seth Shostak Copy Share Image
While I have always thought that the motivation for looking for E.T. was both self-evident and patently worthy, it's possible that I'm a victim… — Seth Shostak Copy Share Image
I studied Latin in high school, and I was reading stuff from Cicero. And that signal took a few thousand years to get to… — Seth Shostak Copy Share Image
About the only things that are unique to Earth are our biota and our culture. If aliens ever come here, they'd most likely be… — Seth Shostak Copy Share Image
This plucky NASA telescope is able to find planets en masse. If you compare planet hunting to prospecting for gold, then Kepler is equivalent… — Seth Shostak Copy Share Image
