Give consideration to the fact that alien astronomers could have scrutinized Earth for more than 4 billion years without detecting any radio… — Seth Shostak Copy Share Image
Ever since the Second World War, television signals (as well as FM radio and radar) have served as Homo sapiens' emissaries into… — Seth Shostak Copy Share Image
Diminutive worlds are more likely to be rocky, and lapped by oceans and atmospheres. In the vernacular of 'Star Trek,' these would… — Seth Shostak Copy Share Image
There's no doubt that the Moon is more than a handy night light and a hair restorer for werewolves. It's responsible for… — Seth Shostak Copy Share Image
Jupiter, a world far larger than Earth, is so warm that it currently radiates more internal heat than it receives from the… — Seth Shostak Copy Share Image
It's hard to imagine anything more interesting than learning how we're woven into the enormous tapestry of existence. Where did our universe… — Seth Shostak Copy Share Image
Data from orbiting telescopes like NASA's Kepler Mission hint that the tally of habitable planets in our galaxy is many billion. If… — Seth Shostak Copy Share Image
Once typecast as the indispensable altarpiece of a well-appointed living room, TVs have infected every human environment. The average American household has… — Seth Shostak Copy Share Image
Humans have existed only for the last 0.001 percent of cosmic time. All of which says that - unless the Homo sapiens… — Seth Shostak Copy Share Image
The math is dead simple: it seems that the frequency of planets able to support life is roughly one percent. In other… — 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
Explorers tend to be the aggressive types - why else would they risk scurvy, mutiny and other bad things to go out… — 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
If aliens are really hanging out in our 'hood, it's hard to imagine any other fact more worthy of study. If not,… — Seth Shostak Copy Share Image
America's popular heroes have seldom been its great thinkers, and even less its scientists. The success of TV's 'Big Bang Theory,' which… — Seth Shostak Copy Share Image
While human space travel is daunting, machines - with their indefinitely long lifetimes - could travel the galaxy. It might make little… — 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
