over black friday china is popular single stay as past the u.s. consumer extravaganza to become the world's biggest day in shopping held annually on november the eleventh hence the name which refers to the for once in the date the shopping bonanza brought in another record have mounted this year but there are signs that sales on the day of beginning to slow down t.-shirt this year single stay kicked off with a colorful gala complete with excited fans customers and the life tally of incoming sales the one billion dollar mark fell after a mere eighty five seconds after an hour sales had reached ten billion dollars by the end of the day revenue it online giant alibaba clocked in at thirty point eight billion dollars a new record. for the single stay shopping festival has reached its tenth year it means not only discounts but also appreciation.

to satisfy one sellers to show their gratitude to consumers by offering them the best products the best prices are. among the sellers swimmin the global players all in all some hundred eighty thousand friends participated in the consumer frenzy ali baba hopes even more companies will begin participating bringing even higher revenues. month i'd also be honest i've been wondering about the future of singles day many people have been asking me about this two. singles day looks set to achieve revenues of two hundred billion yuan one and will make changes as we go along i think we can bring it to three hundred billion five hundred billion maybe even a trillion. the sky's the limit that what the moment feeds should remain firmly on the ground with a general slowdown in the chinese economy revenue growth has slowed from forty.

percent last year to twenty seven percent this year. it watching to w. news life from berlin wall coming up at the top of the hour. to. see the fun and source of the never ending mystery of the sun what goes on inside it and what does it sound like. to solar

storms pose a danger to our. researchers have made exciting new discoveries news from space on tomorrow to do next on g.w. . near a wonderful west virginia. the mountain state. gets a jump in producer in the united states and has relied on mining for generations. but whenever there is around here say they are not. mr cheney on the phone card america.

sleep. carefully. don't move. to the. discovery. subscribe to the documentary. welcome to the science show on t.w. coming up this time on tomorrow today. definable at the center of our solar system the sun has many secrets but researchers are making fascinating

discoveries the core rotates faster than the outside and some activity varies in intensity. this is even more news from space at the greenbank observatory astronomers are listening in on faraway galaxies. the sun is nearly one hundred fifty million kilometers away from the earth its night takes more than eight minutes to reach us but only a part of it gets through the atmosphere to the surface of our planet that's good because that's what's enabled life to develop in the he's at the sun makes mostly evaporate clouds form it rains plants grow thanks to the sunlight which triggers photosynthesis that produces much of the oxygen recruits and food for humans and other animals. sunlight causes our bodies to form vitamin d.

. just some is the source of life a fiery ball with the fast spinning cool. around four and a half billion years ago our solar system developed out of a rotating cloud of gas and dust. a huge fireball appeared at the center our star the sun. the planets of continue to rotate around it to this day but what about the sun itself does it stand still. galileo was the first to observe dark spots on the sun surface back in merely seventeenth century with the help of a so-called hellyeah scope he was able to project the sun spots on the paper and mark that position. it was clear that the sun spots were moving indicating that the sun was rotating today such observations are made around the clock using data

provided by satellites the sun rotates on its axis every twenty five days at its a quatre at the poles one rotation takes thirty five days so the surface of this fiery mass is actually moving at different speeds. and what about the sun's. it's completely hidden from view does it also rotate. last year that question was finally answered definitively. an international team of scientists managed to measure with high precision the rate at which the sun's core rotates. and they discovered that it actually moves much faster than the surface. they found out that. the rotation of the core of the sun. is significantly faster

than in the rest of the radiator. by a factor of three to four. however scientists able to look inside the sun to find out what was happening. long as a helio seismologist he and his team at the max planck institute for solar system research study the oscillations on the surface of the sun these reveal a lot about the sun structure and dynamics. sound waves are produced which typically oscillate for a period of about five minutes. if we could hear in space we would discover that the sun is in fact incredibly noisy. the sun makes sound. near the surface excites. which you're looking at here is. presents the motion inside the sun that are associated with

a particular mood. measuring the frequency of this mood will tell us about the conditions in the sun.