A Quote by Seth Shostak
Ever since the Second World War, television signals (as well as FM radio and radar) have served as Homo sapiens' emissaries into deep space. High-frequency, high-power broadcasts have filled an Earth-centered bubble more than 60 light-years in radius with signals.
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The strongest signals leaking off our planet are radar transmissions, not television or radio. The most powerful radars, such as the one mounted on the Arecibo telescope (used to study the ionosphere and map asteroids) could be detected with a similarly sized antenna at a distance of nearly 1,000 light-years.
FM signals and those of broadcast television...travel out to space at the speed of light. Any eavesdropping alien civilization will know all about our TV programs (probably a bad thing), will hear all our FM music (probably a good thing), and know nothing of the politics of AM talk-show hosts (probably a safe thing).
In any case, the leading edge of our "on purpose" radio signals is 30 light-years away and, if intercepted, may mend the aliens' image of us based on the radio bubble of our television shows. But this will happen only if the aliens can somehow determine which type of signal comes closer to the truth of who we are, and what our cosmic identity deserves to be.
Religion is a practical discipline and it's one that we have always done, ever since humanity appeared on the scene when Homo sapiens became Homo sapiens. Sapiens became a human being, our minds very naturally segue into transcendence.
Give consideration to the fact that alien astronomers could have scrutinized Earth for more than 4 billion years without detecting any radio signals, despite the fact that our world is the poster child for habitability.
Our television transmitters leak out from the Earth. And actually, there's a sphere surrounding the Earth from the earliest television signals, maybe 70 years ago, that's going out one light year per year. But it's really weak.
In the two million years during which we climbed from stone-tool-wielding Homo erectus with sloping brows to high-foreheaded Homo urbanis - man, the inventor of the city - we underwent 60 glaciations, 60 ice ages.
Radio astronomers study radio waves from space using sensitive antennas and receivers, which give them precise information about what an astronomical object is and where it is in our night sky. And just like the signals that we send and receive here on Earth, we can convert these transmissions into sound using simple analog techniques.
The paradox of the human condition is expressed more in education than elsewhere in human culture, because learning to learn has been and continues to be Homo Sapiens' most formidable evolutionary task... It must also be clear that we will never quite learn how to learn, for since Homo Sapiens is self-changing, and since the more culture changes the faster it changes, man's methods and rate of learning will never quite keep pace with his need to learn.
I had very good support from Democrats and Republicans all throughout my administration. I had a very high batting average. We added more jobs per year in my four years than any other president since the Second World War.
It also signals to me, when I pick up a pencil, that this is a rough draft. This is not going anywhere, and no one's going to see it. You have permission to make all the mistakes you want. It signals freedom to me, and it signals mistakes.
In 1897, troops from the greatest empire the world had ever seen marched down London’s mall for Queen Victoria’s diamond jubilee. Seventy years later, Britain had government health care, a government-owned car industry, massive government housing, and it was a shriveled high-unemployment socialist basket-case living off the dwindling cultural capital of its glorious past. In 1945, America emerged from the Second World War as the preeminent power on earth. Seventy years later . . . Let’s not go there.
A high regard for the things of this world always signals a lowering regard for God.
I really appreciate that ability to gather signals of demand and signals of retention early on.
If we ever established contact with intelligent life on another world, there would be barriers to communication. First, they would be many light years away, so signals would take many years to reach them: there would be no scope for quick repartee. There might be an IQ gap.
...I do like the low frequencies. It's from years and years of observing audiences when they hear a lower frequency coming from an instrument it tends to pull them in. You have to listen a little more attentively. High frequency instruments hit you so hard, after a while the ear has a tendency to want to shut down. And that's what happens. I've been able to observe very carefully how people tend to get very tired of listening to high frequencies a lot.
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