wang miao drive along jingmi road until he be in miyun county . from there he head to heilongtan , climb up the mountain along a wind road , and arrive at the radio astronomy observatory of the chinese academy of sciences ' national astronomical center . he see a line of twenty-eight parabolic antenna dish , each with a diameter of nine meter , like a row of spectacular steel plant . at the end be two tall radio telescope with dish fifty meter in diameter , build in 2006 . as he drive closer , wang could not help but think of the background in the picture of ye and she daughter . but the work of sha ruishan , ye 's student , have nothing to do with these radio telescope . dr. sha 's lab be mainly responsible for receive the datum transmit from three satellite : the cosmic background explorer , cobe , launch in november of 1989 and about to be retire ; the wilkinson microwave anisotropy probe , wmap , launch in 2003 ; and planck , the space observatory launch by the european space agency in 2009 . cosmic microwave background radiation very precisely match the thermal black body spectrum at a temperature of 2.7255 k and be highly isotropic — meaning nearly uniform in every direction — with only tiny temperature fluctuation at the part per million range . sha ruishan 's job be to create a more detailed map of the cosmic microwave background use observational datum . the lab be not very big . equipment for receive satellite datum be squeeze into the main computer room , and three terminal display the information send by the three satellite . sha be excite to see wang . clearly bore with he long isolation and happy to have a visitor , he ask wang what kind of datum he want to see . " i want to see the overall fluctuation in the cosmic microwave background . " " can you ... be more specific ? " " what i mean be ... i want to see the isotropic fluctuation in the overall cosmic microwave background , between one and five percent , " he say , quote from shen 's email . sha grin . start at the turn of the century , the miyun radio astronomy observatory have open itself to visitor . in order to earn some extra income , sha often play the role of tour guide or give lecture . this be the grin he reserve for tourist , as he have grow use to they astounding scientific illiteracy . " mr. wang , i take it you be not a specialist in the field ? " " i work in nanotech . " " ah , make sense . but you must have some basic understanding of the cosmic microwave background ? " " i do not know much . i know that as the universe cool after the big bang , the leftover 'em ber ' become the cosmic microwave background . the radiation fill the entire universe and can be observe in the centimeter wavelength range . i think it be back in the sixty when two americans accidentally discover the radiation when they be test a supersensitive satellite reception antenna — " " that be more than enough , " sha interrupted , wave he hand . " then you must know that unlike the local variation we observe in different part of the universe , the overall fluctuation in the cosmic microwave background be correlate with the expansion of the universe . it be a very slow change measure at the scale of the age of the universe . even with the sensitivity of the planck satellite , continuous observation for a million year might not detect any such shift . but you want to see a five percent fluctuation tonight ? do you realize what that would mean ? the universe would flicker like a fluorescent tube that be about to burn out ! " and it will be flicker for i , wang think . " this must be some joke from professor ye , " sha say . " nothing would please i more than to discover that it be a joke , " wang say . he be about to tell sha that ye do not know the detail of he request , but he be afraid that sha would then refuse to help he . " well , since professor ye ask i to help you , let 's do the observation . it be not a big deal . if you just need one percent precision , datum from the antique cobe be sufficient . " as he speak , sha type quickly at the terminal . soon a flat green line appear on the screen . " this curve be the real-time measurement of the overall cosmic microwave background — oh , call it a straight line would be more accurate . the temperature be 2.725 ± 0.002 k. the error range be due to the doppler effect from the motion of the milky way , which have already be filter out . if the kind of fluctuation you anticipate — in excess of one percent — occur , this line would turn red and become a waveform . i would bet that it be go to stay a flat green line until the end of the world , though . if you want to see it show the kind of fluctuation observable by the naked eye , you might have to wait until long after the death of the sun . " " i be not interfere in you work , be i ? " " no. . since you need such low precision , we can just use some basic datum from cobe . okay , it be all set . from now on , if such great fluctuation occur , the datum will be automatically save to disk . " " i think it might happen around one o'clock a.m. " " wow , so precise ! no problem , since i be work the night shift , anyway . have you have dinner yet ? good , then i 'll take you on a tour . " the night be moonless . they walk along the row of antenna dish , and sha point to they . " breathtaking , be not they ? it be too bad that they be all like the ear of a deaf man . " " why ? " " ever since construction be complete , interference have be unceasing in the observational band . first , there be the paging station during the eighty . now , it be the scramble to develop mobile communication network and cell tower . these telescope be capable of many scientific task — survey the sky , detect variable radio source , observe the remains of supernova — but we can not perform most of they . we have complain to the state regulatory radio commission many time , never with any result . how can we get more attention than china mobile , china unicom , china netcom ? without money , the secret of the universe be worth shit . at least my project only depend on satellite datum and have nothing to do with these ' tourist attraction . ' " " in recent year , commercial operation of basic research have be fairly successful , like in high-energy physics . maybe it would be better if the observatory be build in place farther away from city ? " " it all come down to money . right now , we only choice be to find technical means to shield against interference . well , it would be much better if professor ye be here . she accomplish a lot in this field . " so the topic of conversation turn to ye wenjie . and from she student , wang finally learn about she life . he listen as sha tell of how she witness the death of she father during the cultural revolution , how she be falsely accuse at the production and construction corps , how she then seem to disappear until she return to beijing at the beginning of the ninety , when she begin teach astrophysics at tsinghua , where she father have also teach , until she retirement . " it be only recently reveal that she have spend more than twenty year at red coast base . " wang be stunned . " you mean , those rumor — " " most turn out to be true . one of the researcher who develop the decipher system for the red coast project emigrate to europe and write a book last year . most of the rumor you hear come out of that book . many who participate in red coast be still alive . " " that be ... a fantastical legend . " " especially for it to happen during those year — absolutely incredible . " they continue to speak for a while . sha ask the purpose behind wang 's strange request . wang avoid give a straight answer , and sha do not press . the dignity of a specialist do not allow sha to express too much interest in a request that clearly go against he professional knowledge . then they go to a all-night bar for tourist and sit for two hour . as sha finish one beer after another , he tongue loosen even more . but wang become anxious , and he mind keep return to that green line on the terminal in sha 's office . it be only at ten to one in the morning that sha finally give in to wang 's repeat plea to go back to the lab . the spotlight that have light up the row of radio antenna have be turn off , and the antenna now form a simple two-dimensional picture against the night sky like a series of abstract symbol . all of they gaze up at the sky at the same angle , as though wait expectantly for something . the scene make wang shudder despite the warmth of the spring evening . he be remind of the giant pendulum in three body . they arrive back at the lab at one . as they look at the terminal , the fluctuation be just get start . the flat line turn into a wave , the distance between one peak and the next inconstant . the line 's color become red , like a snake awakening after hibernation , wriggle as its skin refill with blood . " it must be a malfunction in cobe ! " sha stare at the waveform , terrify . " it be not a malfunction . " wang 's tone be exceedingly calm . he have learn to control himself when face with such sight . " we 'll know soon enough , " sha say . he go to the other two terminal and type rapidly to bring up the datum gather by the other two satellite , wmap and planck . now three waveform move in sync across the three terminal , exactly alike . sha take out a notebook computer and rush to turn it on . he plug in a network cable and pick up the phone . wang could tell from the one-sided conversation that he be try to get in touch with the Ürümqi radio astronomy observatory . he do not explain to wang what he be do , he eye lock onto the browser window on the notebook . wang could hear he rapid breathing . a few minute later , a red waveform appear in the browser window , move in step with the other three . the three satellite and the ground-based observatory confirm one fact : the universe be flicker . " can you print out the waveform ? " wang ask . sha wipe away the cold sweat on he forehead and nod . he move he mouse and click " print . " wang grab the first page as soon as it come out of the laser printer , and , with a pencil , begin to match the distance between the peak with the morse code chart he take out of he pocket . short-long-long-long-long , short-long-long-long-long , long-long-long-long-long , long-long-long-short-short , long-long-long-short-short-short , short-short-long-long-long , short-long-long-long-long , long-long-long-short-short-short , short-short-short-long-long , long-long-short-short-short . that be 1108:21:37 , wang think . short-long-long-long-long , short-long-long-long-long , long-long-long-long-long , long-long-long-short-short , long-long-long-short-short-short , short-short-long-long-long , short-long-long-long-long , long-long-long-short-short-short , short-short-short-long-long , long-short-short-short-short — that be 1108:21:36 . the countdown continue at the scale of the universe . ninety-two hour have already elapse , and only 1,108 hour remain . sha pace back and forth anxiously , pause from time to time to look at the sequence of number wang be write down . " can not you tell i what be go on ? " he shout . " i can not possibly explain this to you , dr. sha . trust i . " wang push away the pile of papers fill with waveform . as he stare at the sequence of number , he say , " maybe the three satellite and the observatory be all malfunction . " " you know that be impossible ! " " what if it be sabotage ? " " also impossible ! to simultaneously alter the datum from three satellite and a observatory on earth ? you be talk about a supernatural saboteur . " wang nod . compare to the idea of the universe flickering , he would prefer a supernatural saboteur . but sha then deprive he of this last glimmer of hope . " it be easy to confirm this . if the cosmic microwave background be fluctuate this much , we should be able to see it with we own eye . " " what be you talk about ? the wavelength of the cosmic microwave background be seven centimeter . that be five order of magnitude longer than the wavelength of visible light . how can we possibly see it ? " " use 3k glass . " " three-k glass ? " " it be a sort of science toy we make for the capital planetarium . with we current level of technology , we could take the six-meter horn antenna use by penzias and wilson almost half a century ago to discover the cosmic microwave background and miniaturize it to the size of a pair of glass . then we add a converter in the glass to compress the detect radiation by five order of magnitude so that seven-centimeter wave be turn into visible red light . this way , visitor can put on the glass at night and observe the cosmic microwave background on they own . and now , we can use it to see the universe flicker . " " where can i find these glass ? " " at the capital planetarium . we make more than twenty pair . " " i must get my hand on a pair before five . " sha pick up the phone . the other side pick up only after a long while . sha have to expend a lot of energy to convince the person awaken in the middle of the night to go to the planetarium and wait for wang 's arrival in a hour . as wang leave , sha say , " i will not go with you . what i have see be enough , and i do not need any more confirmation . but i hope that you will explain the truth to i when you feel the time be right . if this phenomenon should lead to some research result , i will not forget you . " wang open the car door and say , " the flickering will stop at five in the morning . i would suggest you not pursue it after this . believe i , you will not get anywhere . " sha stare at wang for a long time and then nod . " i understand . strange thing have be happen to scientist lately .... " " yes . " wang duck into the car . he do not want to discuss the subject any further . " be it we turn ? " " it be my turn , at least . " wang start the engine . a hour later , wang arrive at the new planetarium and get out of the car . the bright light of the city penetrate the translucent wall of the immense glass building and dimly reveal its internal structure . wang think that if the architect have intend to express a feeling about the universe , the design be a success : the more transparent something be , the more mysterious it seem . the universe itself be transparent ; as long as you be sufficiently sharp-eyed , you could see as far as you like . but the farther you look , the more mysterious it become . the sleepy-eyed planetarium staffer be wait by the door for wang . he hand he a small suitcase and say , " there be five pair of 3k glass in here , all fully charge . the left button switch it on . the right dial be for adjust brightness . i have a dozen more pair upstairs . you can look as much as you like , but i be go to take a nap now in the room over there . this dr. sha must be mental . " he go into the dim interior of the planetarium . wang open the suitcase on the backseat of he car and take out a pair of 3k glass . it resemble the display inside the panoramic view helmet of the v-suit . he put the glass on and look around . the city look the same as before , only dimmer . then he remember that he have to switch they on . the city turn into many hazy glowing halo . most be fix , but a few flicker or move . he realize that these be source of radiation in the centimeter range , all now convert to visible light . at the heart of each halo be a radiation source . because the original wavelength be so long , it be impossible to see they shape clearly . he lift he head and see a sky glowing with a faint red light . just like that , he be see the cosmic microwave background . the red light have come from more than ten billion year ago . it be the remnant of the big bang , the still-warm ember of creation . he could not see any star . normally , since visible light would be compress to invisible by the glass , each star should appear as a black dot . but the diffraction of centimeter-wave radiation overwhelm all other shape and detail . once he eye have grow use to the sight , wang could see that the faint red background be indeed pulsing . the entire sky flicker , as if the universe be but a quiver lamp in the wind . stand under the flash dome of the night sky , wang suddenly feel the universe shrink until it be so small that only he be imprison in it . the universe be a cramped heart , and the red light that suffuse everything be the translucent blood that fill the organ . suspend in the blood , he see that the flickering of the red light be not periodic — the pulse be irregular . he feel a strange , perverse , immense presence that could never be understand by human intellect . wang take off the 3k glass and sit down weakly on the ground , lean against the wheel of he car . the city at night gradually recover the reality of visible light . but he eye roam , try to capture other sight . by the entrance of the zoo across the street , there be a row of neon light . one of the light be about to burn out and flicker irregularly . nearby , a small tree 's leaf tremble in the night breeze , twinkle without pattern as they reflect streetlight . in the distance , the red star atop the beijing exhibition center 's russian-style spire reflect the light from the car pass below , also twinkle randomly .... wang try to interpret the flicker as morse code . he even feel that the wrinkle in the flag flap next to he and the ripple in the puddle on the side of the road might be send he message . he struggle to understand all the message , and feel the passing of the countdown , second by second . he do not know how long he stay there . the planetarium staffer finally emerge and ask he whether he be do . but when he see wang 's face , sleep disappear from the staffer 's eye and be replace by fear . he pack up the 3k glass , stare at wang for a few seconds , and quickly leave with the suitcase . wang take out he mobile and dial shen yufei 's number . she pick up right away . perhaps she be also suffer from insomnia . " what happen at the end of the countdown ? " wang ask . " i do not know . " she hang up . what can it be ? maybe my own death , like yang dong 's . or maybe it will be a disaster like the great tsunami that sweep through the indian ocean more than a decade ago . no one will connect it to my nanotech research . could it be that every previous great disaster , include the two world war , be also the result of reach the end of ghostly countdown ? could it be that every time there be someone like i , who no one thought of , who bear the ultimate responsibility ? or maybe it signal the end of the whole world . in this perverse world , that would be a relief . one thing be certain . no matter what be at the end of the countdown , in the remain one thousand or so hour , the possibility would torture he cruelly , like demon , until he suffer a complete mental breakdown . wang duck back into the car and leave the planetarium . just before dawn , the road be relatively empty . but he do not dare to drive too fast , feeling that the faster the car move , the faster the countdown would go . when a glimmer of light appear in the eastern sky , he park and walk around aimlessly . he mind be empty of thought : only the countdown pulsed against the dim red background of cosmic radiation . he seem to have turn into nothing but a simple timer , a bell that toll for he know not whom . the sky brighten . he be tired , so he sit down on a bench . when he lift he head to see where he subconscious have bring he , he shiver . he sit in front of st. joseph 's church at wangfujing . in the pale white light of dawn , the church 's romanesque vault appear as three giant finger point out something in space for he . as wang get up to leave , he be hold back by a snippet of hymnal music . it be not sunday , so it be likely a choir rehearsal . the song be " come , gracious spirit , heavenly dove . " as he listen to the solemn , sacred music , wang miao once again feel that the universe have shrink until it be the size of a empty church . the domed ceiling be hide by the flash red light of the background radiation , and he be a ant crawl through the crack in the floor . he feel a giant , invisible hand caress he tremble heart , and he be once again a helpless babe . something deep in he mind that have once hold he up soften like wax and collapse . he cover he eye and begin to cry . wang 's cry be interrupt by laughter . " hahaha , another one bite the dust ! " he turn around . captain shi qiang stand there , blow out a mouthful of white smoke .