Radio Telescope Quotes

The total amount of energy from outside the solar system ever received by all the radio telescopes on the planet Earth is less than the energy of a single snowflake striking the ground.

The great radio telescopes of the world are constructed in remote locations for the same reason Paul Gauguin sailed to Tahiti: For them to work well they must be far from civilization.

-You know how to call me although such a noise now would only confuse the air Neither of us can forget the steps we danced the words you stretched to call me out of dust Yes I long for you not just as a leaf for weather or vase for hands but with a narrow human longing that makes a man refuse any fields but his own I wait for you at an unexpected place in your journey like the rusted key or the feather you do not pick up.- -I WILL NEVER FIND THE FACES FOR ALL GOODBYES I'VE MADE.- For Anyone Dressed in Marble The miracle we all are waiting for is waiting till the Parthenon falls down and House of Birthdays is a house no more and fathers are unpoisoned by renown. The medals and the records of abuse can't help us on our pilgrimage to lust, but like whips certain perverts never use, compel our flesh in paralysing trust. I see an orphan, lawless and serene, standing in a corner of the sky, body something like bodies that have been, but not the scar of naming in his eye. Bred close to the ovens, he's burnt inside. Light, wind, cold, dark -- they use him like a bride. I Had It for a Moment I had it for a moment I knew why I must thank you I saw powerful governing men in black suits I saw them undressed in the arms of young mistresses the men more naked than the naked women the men crying quietly No that is not it I'm losing why I must thank you which means I'm left with pure longing How old are you Do you like your thighs I had it for a moment I had a reason for letting the picture of your mouth destroy my conversation Something on the radio the end of a Mexican song I saw the musicians getting paid they are not even surprised they knew it was only a job Now I've lost it completely A lot of people think you are beautiful How do I feel about that I have no feeling about that I had a wonderful reason for not merely courting you It was tied up with the newspapers I saw secret arrangements in high offices I saw men who loved their worldliness even though they had looked through big electric telescopes they still thought their worldliness was serious not just a hobby a taste a harmless affectation they thought the cosmos listened I was suddenly fearful one of their obscure regulations could separate us I was ready to beg for mercy Now I'm getting into humiliation I've lost why I began this I wanted to talk about your eyes I know nothing about your eyes and you've noticed how little I know I want you somewhere safe far from high offices I'll study you later So many people want to cry quietly beside you

How he’d asked for a telescope for his fourteenth birthday and received a clock radio instead; how he’d saved his allowance and bought himself one. How, sometimes, at dinner, Nath never said a word about his day, because their parents never asked.

Let me first talk about our brains as a personal radio telescope. Let me talk first about its wonderful built-in wiring for tuning out the static of our civilization in order to better tune in its symphony.

A radio telescope works more like a light meter than a camera. You point it toward some fairly broad region of the sky, and it records how much energy, in a particular radio frequency, is coming down to Earth.

I think that the event which, more than anything else, led me to the search for ways of making more powerful radio telescopes, was the recognition, in 1952, that the intense source in the constellation of Cygnus was a distant galaxy—1000 million light years away. This discovery showed that some galaxies were capable of producing radio emission about a million times more intense than that from our own Galaxy or the Andromeda nebula, and the mechanisms responsible were quite unknown. ... [T]he possibilities were so exciting even in 1952 that my colleagues and I set about the task of designing instruments capable of extending the observations to weaker and weaker sources, and of exploring their internal structure.

With their radio telescopes they can capture wisps of radiation so preposterously faint that the total amount of energy collected from outside the solar system by all of them

The great radio telescopes of the world are constructed in remote locations for the same reason Paul Gauguin sailed to Tahiti: For them to work well, they must be far from civilization.

With their radio telescopes they can capture wisps of radiation so preposterously faint that the total amount of energy collected from outside the solar system by all of them together since collecting began (in 1951) is ‘less than the energy of a single snowflake striking the ground’2, in the words of Carl Sagan. In

We’d be outraged if our government invested in expensive telescopes for the sole purpose of searching for orbiting teapots. But we can appreciate the case for spending money on SETI, the Search for Extraterrestrial Intelligence, using radio telescopes to scan the skies in the hope of picking up signals from intelligent aliens.

All my life I have wondered about the possibility of life elsewhere. What would it be like? Of what would it be made? All living things on our planet are constructed of organic molecules—complex microscopic architectures in which the carbon atom plays a central role. There was once a time before life, when the Earth was barren and utterly desolate. Our world is now overflowing with life. How did it come about? How, in the absence of life, were carbon-based organic molecules made? How did the first living things arise? How did life evolve to produce beings as elaborate and complex as we, able to explore the mystery of our own origins? And on the countless other planets that may circle other suns, is there life also? Is extraterrestrial life, if it exists, based on the same organic molecules as life on Earth? Do the beings of other worlds look much like life on Earth? Or are they stunningly different—other adaptations to other environments? What else is possible? The nature of life on Earth and the search for life elsewhere are two sides of the same question—the search for who we are. In the great dark between the stars there are clouds of gas and dust and organic matter. Dozens of different kinds of organic molecules have been found there by radio telescopes. The abundance of these molecules suggests that the stuff of life is everywhere. Perhaps the origin and evolution of life is, given enough time, a cosmic inevitability. On some of the billions of planets in the Milky Way Galaxy, life may never arise. On others, it may arise and die out, or never evolve beyond its simplest forms. And on some small fraction of worlds there may develop intelligences and civilizations more advanced than our own. Occasionally someone remarks on what a lucky coincidence it is that the Earth is perfectly suitable for life—moderate temperatures, liquid water, oxygen atmosphere, and so on. But this is, at least in part, a confusion of cause and effect. We earthlings are supremely well adapted to the environment of the Earth because we grew up here. Those earlier forms of life that were not well adapted died. We are descended from the organisms that did well. Organisms that evolve on a quite different world will doubtless sing its praises too. All life on Earth is closely related. We have a common organic chemistry and a common evolutionary heritage. As a result, our biologists are profoundly limited. They study only a single kind of biology, one lonely theme in the music of life. Is this faint and reedy tune the only voice for thousands of light-years? Or is there a kind of cosmic fugue, with themes and counterpoints, dissonances and harmonies, a billion different voices playing the life music of the Galaxy? Let

Curious how much gas lurks among the stars in galaxies? Radio telescopes do that best. There is no knowledge of the cosmic background, and no real understanding of the big bang, without microwave telescopes. Want to peek at stellar nurseries deep inside galactic gas clouds? Pay attention to what infrared telescopes do. How about emissions from the vicinity of ordinary black holes and supermassive black holes in the center of a galaxy? Ultraviolet and X-ray telescopes do that best. Want to watch the high-energy explosion of a giant star, whose mass is as great as forty suns? Catch the drama via gamma ray telescopes. We’ve come a long way since Herschel’s experiments with rays that were “unfit for vision,” empowering us to explore the universe for what it is, rather than for what it seems to be. Herschel would be proud. We achieved true cosmic vision only after seeing the unseeable: a dazzlingly rich collection of objects and phenomena across space and across time that we may now dream of in our philosophy.

Reality is everything that exists. That sounds straightforward, doesn’t it? Actually, it isn’t. There are various problems. What about dinosaurs, which once existed but exist no longer? What about stars, which are so far away that, by the time their light reaches us and we can see them, they may have fizzled out? We’ll come to dinosaurs and stars in a moment. But in any case, how do we know things exist, even in the present? Well, our five senses — sight, smell, touch, hearing and taste — do a pretty good job of convincing us that many things are real: rocks and camels, newly mown grass and freshly ground coffee, sandpaper and velvet, waterfalls and doorbells, sugar and salt. But are we only going to call something ‘real’ if we can detect it directly with one of our five senses? What about a distant galaxy, too far away to be seen with the naked eye? What about a bacterium, too small to be seen without a powerful microscope? Must we say that these do not exist because we can’t see them? No. Obviously we can enhance our senses through the use of special instruments: telescopes for the galaxy, microscopes for bacteria. Because we understand telescopes and microscopes, and how they work, we can use them to extend the reach of our senses — in this case, the sense of sight — and what they enable us to see convinces us that galaxies and bacteria exist. How about radio waves? Do they exist? Our eyes can’t detect them, nor can our ears, but again special instruments — television sets, for example — convert them into signals that we can see and hear. So, although we can’t see or hear radio waves, we know they are a part of reality. As with telescopes and microscopes, we understand how radios and televisions work. So they help our senses to build a picture of what exists: the real world — reality. Radio telescopes (and X-ray telescopes) show us stars and galaxies through what seem like different eyes: another way to expand our view of reality.

Funding did become available for a much more modest proposal: to send a carefully coded message in 1971 to aliens in outer space. A coded message containing 1,679 bits of information was transmitted via the giant Arecibo radio telescope in Puerto Rico toward the Globular Cluster M13, about 25,100 light-years away. It was the world’s first cosmic greeting card, containing relevant information about the human race. But no reply message was received. Perhaps the aliens were not impressed with us, or possibly the speed of light got in the way. Given the large distances involved, the earliest date for a reply message would be 52,174 years from now. Since then, some scientists have expressed misgivings about advertising our existence to aliens in space, at least until we know their intentions toward us. They disagree with the proponents of the METI Project (Messaging to Extra-Terrestrial Intelligence) who actively promote sending signals to alien civilizations in space. The reasoning behind the METI Project is that Earth already sends vast amounts of radio and TV signals into outer space, so a few more messages from the METI Project will not make much difference. But the critics of METI believe that we should not needlessly increase our chances of being discovered by potentially hostile aliens.

There are only two types of waves that can travel across the universe bringing us information about things far away: electromagnetic waves (which include light, X-rays, gamma rays, microwaves, radio waves…); and gravitational waves. Electromagnetic waves consist of oscillating electric and magnetic forces that travel at light speed. When they impinge on charged particles, such as the electrons in a radio or TV antenna, they shake the particles back and forth, depositing in the particles the information the waves carry. That information can then be amplified and fed into a loudspeaker or on to a TV screen for humans to comprehend. Gravitational waves, according to Einstein, consist of an oscillatory space warp: an oscillating stretch and squeeze of space. In 1972 Rainer (Rai) Weiss at the Massachusetts Institute of Technology had invented a gravitational-wave detector, in which mirrors hanging inside the corner and ends of an L-shaped vacuum pipe are pushed apart along one leg of the L by the stretch of space, and pushed together along the other leg by the squeeze of space. Rai proposed using laser beams to measure the oscillating pattern of this stretch and squeeze. The laser light could extract a gravitational wave’s information, and the signal could then be amplified and fed into a computer for human comprehension. The study of the universe with electromagnetic telescopes (electromagnetic astronomy) was initiated by Galileo, when he built a small optical telescope, pointed it at Jupiter and discovered Jupiter’s four largest moons. During the 400 years since then, electromagnetic astronomy has completely revolutionised our understanding of the universe.

Still dark. The Alpine hush is miles deep. The skylight over Holly’s bed is covered with snow, but now that the blizzard’s stopped I’m guessing the stars are out. I’d like to buy her a telescope. Could I send her one? From where? My body’s aching and floaty but my mind’s flicking through the last night and day, like a record collector flicking through a file of LPs. On the clock radio, a ghostly presenter named Antoine Tanguay is working through Nocturne Hour from three till four A.M. Like all the best DJs, Antoine Tanguay says almost nothing. I kiss Holly’s hair, but to my surprise she’s awake: “When did the wind die down?” “An hour ago. Like someone unplugged it.” “You’ve been awake a whole hour?” “My arm’s dead, but I didn’t want to disturb you.” “Idiot.” She lifts her body to tell me to slide out. I loop a long strand of her hair around my thumb and rub it on my lip. “I spoke out of turn last night. About your brother. Sorry.” “You’re forgiven.” She twangs my boxer shorts’ elastic. “Obviously. Maybe I needed to hear it.” I kiss her wound-up hair bundle, then uncoil it. “You wouldn’t have any ciggies left, perchance?” In the velvet dark, I see her smile: A blade of happiness slips between my ribs. “What?” “Use a word like ‘perchance’ in Gravesend, you’d get crucified on the Ebbsfleet roundabout for being a suspected Conservative voter. No cigarettes left, I’m ’fraid. I went out to buy some yesterday, but found a semiattractive stalker, who’d cleverly made himself homeless forty minutes before a whiteout, so I had to come back without any.” I trace her cheekbones. “Semiattractive? Cheeky moo.” She yawns an octave. “Hope we can dig a way out tomorrow.” “I hope we can’t. I like being snowed in with you.” “Yeah well, some of us have these job things. Günter’s expecting a full house. Flirty-flirty tourists want to party-party-party.” I bury my head in the crook of her bare shoulder. “No.” Her hand explores my shoulder blade. “No what?” “No, you can’t go to Le Croc tomorrow. Sorry. First, because now I’m your man, I forbid it.” Her sss-sss is a sort of laugh. “Second?” “Second, if you went, I’d have to gun down every male between twelve and ninety who dared speak to you, plus any lesbians too. That’s seventy-five percent of Le Croc’s clientele. Tomorrow’s headlines would all be BLOODBATH IN THE ALPS AND LAMB THE SLAUGHTERER, and the a vegetarian-pacifist type, I know you wouldn’t want any role in a massacre so you’d better shack up”—I kiss her nose, forehead, and temple—“with me all day.” She presses her ear to my ribs. “Have you heard your heart? It’s like Keith Moon in there. Seriously. Have I got off with a mutant?” The blanket’s slipped off her shoulder: I pull it back. We say nothing for a while. Antoine whispers in his radio studio, wherever it is, and plays John Cage’s In a Landscape. It unscrolls, meanderingly. “If time had a pause button,” I tell Holly Sykes, “I’d press it. Right”—I press a spot between her eyebrows and up a bit—“there. Now.” “But if you did that, the whole universe’d be frozen, even you, so you couldn’t press play to start time again. We’d be stuck forever.” I kiss her on the mouth and blood’s rushing everywhere. She murmurs, “You only value something if you know it’ll end.

So why haven’t we been visited? Maybe the probability of life spontaneously appearing is so low that Earth is the only planet in the galaxy—or in the observable universe—on which it happened. Another possibility is that there was a reasonable probability of forming self-reproducing systems, like cells, but that most of these forms of life did not evolve intelligence. We are used to thinking of intelligent life as an inevitable consequence of evolution, but what if it isn’t? The Anthropic Principle should warn us to be wary of such arguments. It is more likely that evolution is a random process, with intelligence as only one of a large number of possible outcomes. It is not even clear that intelligence has any long-term survival value. Bacteria, and other single-cell organisms, may live on if all other life on Earth is wiped out by our actions. Perhaps intelligence was an unlikely development for life on Earth, from the chronology of evolution, as it took a very long time—two and a half billion years—to go from single cells to multi-cellular beings, which are a necessary precursor to intelligence. This is a good fraction of the total time available before the Sun blows up, so it would be consistent with the hypothesis that the probability for life to develop intelligence is low. In this case, we might expect to find many other life forms in the galaxy, but we are unlikely to find intelligent life. Another way in which life could fail to develop to an intelligent stage would be if an asteroid or comet were to collide with the planet. In 1994, we observed the collision of a comet, Shoemaker–Levy, with Jupiter. It produced a series of enormous fireballs. It is thought the collision of a rather smaller body with the Earth, about sixty-six million years ago, was responsible for the extinction of the dinosaurs. A few small early mammals survived, but anything as large as a human would have almost certainly been wiped out. It is difficult to say how often such collisions occur, but a reasonable guess might be every twenty million years, on average. If this figure is correct, it would mean that intelligent life on Earth has developed only because of the lucky chance that there have been no major collisions in the last sixty-six million years. Other planets in the galaxy, on which life has developed, may not have had a long enough collision-free period to evolve intelligent beings. A third possibility is that there is a reasonable probability for life to form and to evolve to intelligent beings, but the system becomes unstable and the intelligent life destroys itself. This would be a very pessimistic conclusion and I very much hope it isn’t true. I prefer a fourth possibility: that there are other forms of intelligent life out there, but that we have been overlooked. In 2015 I was involved in the launch of the Breakthrough Listen Initiatives. Breakthrough Listen uses radio observations to search for intelligent extraterrestrial life, and has state-of-the-art facilities, generous funding and thousands of hours of dedicated radio telescope time. It is the largest ever scientific research programme aimed at finding evidence of civilisations beyond Earth. Breakthrough Message is an international competition to create messages that could be read by an advanced civilisation. But we need to be wary of answering back until we have developed a bit further. Meeting a more advanced civilisation, at our present stage, might be a bit like the original inhabitants of America meeting Columbus—and I don’t think they thought they were better off for it.

How do you explain the halo around it?” “Maybe this is a gravitational bending of light at its surface, similar to the gravitational bending around galaxies that dark matter produces, which astronomers can detect with radio telescopes. It’s crazy, I know, but we’ve never had dark matter to study before.” “Why not? If it’s so common, why isn’t it all around us?” “Ah, it is all around us! We’re showered by these dark matter particles, probably trillions and trillions every day. But they are also very difficult to find. I'll try to explain.

However, in other circumstances, such as with PSR 1913 + 16, the situation is very different, and gravitational radiation from the system indeed has a significant role to play. Here, Einstein's theory provides a firm prediction of the detailed nature of the gravitational radiation that the system ought to be emitting, and of the energy that should be carried away. This loss of energy should result in a slow spiralling inwards of the two neutron stars, and a corresponding speeding up of their orbital rotation period. Joseph Taylor and Russell Hulse first observed this binary pulsar at the enormous Aricebo radio telescope in Puerto Rico in 1974. Since that time, the rotation period has been closely monitored by Taylor and his colleagues, and the speed-up is in precise agreement with the expectations of general relativity (cf. Fig. 4.11). For this work, Hulse and Taylor were awarded the 1993 Nobel Prize for Physics. In fact, as the years have rolled by, the accumulation of data from this system has provided a stronger and stronger confirmation of Einstein's theory. Indeed, if we now take the system as a whole and compare it with the behaviour that is computed from Einstein's theory as a whole-from the Newtonian aspects of the orbits, through the corrections to these orbits from standard general relativity effects, right up to the effects on the orbits due to loss of energy in gravitational radiation-we find that the theory is confirmed overall to an error of no more than about 10^-14. This makes Einstein's general relativity, in this particular sense, the most accurately tested theory known to science!

behind every human life is an immense chain of happenstance that includes the gravest concerns; murder and theft and betrayal, great love; lives spent in burning spiritual devotion and others in miserly denial; that despite the supposed conformity of country places there might be an oil field worker who kept a trunk of fossil fish or a man with a desperate stutter who dreamed of being a radio announcer, a dwarf with a rivet gun or an old maid on a rooftop with a telescope, spending her finest hours observing the harmonics of the planetary dance.

Spending time near the focal point of a large radio telescope may produce radiation sickness in the human.

Reber’s telescope, though without precedent, was small and crude by today’s standards. Modern radio telescopes are quite another matter. Unbound by backyards, they’re sometimes downright humongous. MK 1, which began its working life in 1957, is the planet’s first genuinely gigantic radio telescope—a single, steerable, 250-foot-wide, solid-steel dish at the Jodrell Bank Observatory near Manchester, England. A couple of months after MK 1 opened for business, the Soviet Union launched Sputnik 1, and Jodrell Bank’s dish suddenly became just the thing to track the little orbiting hunk of hardware—making it the forerunner of today’s Deep Space Network for tracking planetary space probes

can participate in interstellar conversation. Yet there is inherent asymmetry in galactic radio discourse. It is much easier to listen than to transmit. A huge gulf yawns between the ability to build a radio telescope and the ability to mount a sustained multimillennial broadcasting and listening program. We cannot reasonably search for our equals.

For the last forty-eight hours, Dr. Mary Caldwell had spent every waking second studying the signal the radio telescope had received. She was exhausted, exhilarated, and sure of one thing: it was organized, a sign of intelligent life. Behind her, John Bishop,

Aricibo Observatory was the ‘Titanic’ of professional astronomy.

Thinking about this, I realize that, strictly speaking, the first radio telescope wasn’t built in 1932. It was the telegraph system that in 1859 got struck by the Carrington Event, a powerful geomagnetic storm caused by the sun. The sky lit up so brightly in some parts of the world that people thought night had turned to daylight. We didn’t fully understand what was going on at the time, but all those telegraph wires strung up on wooden poles across the US and Europe acted as antennas and absorbed a huge amount of energy, frying electrical equipment and electrocuting telegraph operators.

Galaxies aren’t the only astronomical objects with large redshifts. When the first telescopes that could detect radio waves were built, they discovered very bright, very compact sources in the sky. This is odd, because if you see a single point of light in the sky, it’s usually a star. But stars usually don’t emit a lot of radio waves. These mysterious sources of light were called quasi-stellar objects, or quasars for short.

The famed Arecibo Observatory was repurposed into a national research center in 1969 after being taken over by the National Science Foundation.  It relied not only on the uniqueness of Puerto Rico’s limestone sinkholes, but also the island’s proximity to the equator.  Not only did it hold the record of being the largest single-dish radio telescope on Earth for the last four decades, it also had the honor of producing some of the most historic radio-based observations in human history.

Ben-Ari frowned and stared around the galley. "We'll need more than computers. The Brendan has sensors too. Telescopes. Radio dishes. Lots of hardware. We might be able to move some of it over. The navigational systems I can probably move. We might have to duct tape them onto the Anansi's hull, but . . ." She nodded. "We might just be able to navigate on that thing.