considered by every getting big centimeter of the universe still has about 300 neutrinos left over from the big bang with these other sources like the sun and supernovas although also produce huge amounts and not he lots of new transfers arrive on earth and pass right through our bodies of these there are so weakly interacting we don t even notice them not feel familiar there s gas through every square centimeter of our skin every 2nd of this and we don t even notice from those . weighing neutrinos is very complicated and requires some clever tricks cutting measures some 70 meters long. at one end of the device the scientists put tritium a radioactive isotope of hydrogen. the base of decay of the radioactive tritium nuclei produces an electron and a neutrino to 2 particles share the decay energy which is a known quantity and that allows the researchers to determine the new. trios mass
even further. across who are researchers now know that the neutrino scale works and what they discover with cartoon over the next few years could revolutionize the world of physics. neutrinos are a top candidate for the mysterious dark matter that s thought to account for most of the stuff in the universe most astrophysicists believe that dark matter exists but they still don t know what it consists of. the problem is right why are they don t move even if you have a science question send it in as a video text oh voicemail. if we answer it on the show we ll send you a little surprise as a thank you. can on just ask. this week s question comes from severe riviera in columbia. why do animal horns rary
Them was the ultimate punishment this idea challenged our uniqueness in the cosmos for a long time since Aristotle in fact we thought our solar system and the Earth s place in it was a one and only that is there was one solar system in the cosmos and we were at its center the moon the sun and the visible planets all orbited Earth now jumping into the modern era and the idea of exoplanets that is planets orbiting other stars was tossed into the astronomical ring a century ago but there was no evidence until the early 1990 s. Then the Kepler space telescope came along and by the time it retired in 2018 we had learned that exoplanets are common more than 3000 planets orbiting other stars have been discovered and indeed we ve learned that most stars have such worlds for science historian Alberto Martinez at the University of Texas in Austin each and every discovery of an extra solar planets vindicates the ideas of a 16th century astronomer and Dominican friar Giordano Bruno was a philosop
The longstanding political crisis and at that 3rd month activists blocked traffic to ask drivers to support a strike shuttled for Monday. Security officers in Nigeria have arrested an opposition leader and organizer of nationwide protests called for Monday or more Yalit Swaray as a former presidential candidate has our Nigeria correspondent My any Germans a spokesperson for the State Security Service has told the b.b.c. That the organizer of the revolution now protests was arrested on Saturday morning because he was calling for an overthrow of the Nigerian government publisher and former presidential candidate Lisa Warry is the face of a series of protests scheduled for Monday with the stories of coalition for revolution movement called the Nigerians across the country to take to the streets to demand an end to end security they also want free education and healthcare for all as well as for key economic sectors to be nationalized. Lawyers for the former vice president of the moldy eav
the full. time. we re many. and we re from another galaxy going to researchers around. world or something. trying to take the sons of presidents. messages from the edge of england over the a black holes and neutrinos introduced in 45 minutes on g.w.