There are three known types of neutrinos; a fourth, the sterile neutrino, is proposed as a dark matter candidate. The sterile neutrino would only interact with regular matter throughgravity. "One of the outstanding questions is whether there is a pattern to the fractions that go into each neut...
In Germany, scientists are trying to observe dark matter in a bold new way: by creating it. ALPS II, anexperimentat the Deutsches Elektronen-Synchrotron (DESY) in Hamburg, consists of a 250-meter tunnel with an optical cavity. This cavity amplifies a laser that is exposed to an intense ma...
sconflictwithherson?A.Toleadintheuseofperiodintexting.B.Toemphasizethegreatpowerofwords.C.Toshowyoungsters?attitudestowardstexting.D.Tosuggesttherightuseofpunctuationmarks.( )6.WhyisJuanAbenanteRinconmentionedinthetext?A.Tomakeassessmentsontherecentstudy.B.Toconfirmthefindingsoftherecentstudy.C.Toputforwa...
The leading theory of dark matter is running out of room to hide. This is a preview of subscription content, access via your institution Access options Subscription info for Chinese customers We have a dedicated website for our Chinese customers. Please go to naturechina.com to subscribe to ...
Terry Townshend is a British birdwatcher in China. He has studied Beijing swifts for over ten years. Xu Zhuo protects red-crowned cranes in Heilongjiang. Her father, aunt and grandparents also spent their lifetime looking after the birds. Now the young girl has the job. A.It can be ...
3. No matter what label is thrown your way, only you can define yourself. 不论你的人生被贴上了什么标签,只有你自己可以定义自己。 《飞屋环游记》 观影链接: https://v.qq.com/x/cover/w9gk2xdkyvez6yp.html?ptag=10521 重点单词: adventure[əd'ventʃə]n. 冒险,奇遇vt. 冒险,尝试 ...
what does it matter t what does it matter what does this mean i what else could i wri what flour does yun t what good are mites what good is a love a what hmm what i do need is a d what i mean to say what i neeo to do what i should have sa what im tryna say what if ...
whoisamagazineeditorandDorothyWoodruff?s granddaughter. Whydidtheygothen? Well,theywantedto dosomethinguseful.Soon,however,theyrealizedwhattheyhadundertaken. Theymovedinwithalocalfamily,theHarrisons,and,likethem,hadlittleprivacy,rare baths,andablanketofsnowontheirquiltwhen theywokeupinthe morning.Some mornin...
Any experiment setting out to find dark matter must therefore first choose a hypothesis and proceed to prove or disprove it. However, the checklist of candidates is very long, and many ideas cannot be tested experimentally with current technology. ...
Why Is Dark Matter a Mystery? Courtesy: XENON1T The XENON1T experiment is deep underground to avoid the effects of electromagnetic radiation. The history of dark matter shows just how elusive this star stuff can be. Physicists first theorized the existence of dark matter in 1933, partly because...