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This handout photo released by NASA shows a SpaceX Falcon 9 rocket with the company's Crew Dragon spacecraft onboard on the launch pad at Launch Complex 39A during a brief static fire test ahead of NASA's SpaceX Demo-2 mission, May 22, 2020, at NASA's Kennedy Space Center in Florida. - NASA's SpaceX Demo-2 mission is the first launch with astronauts of the SpaceX Crew Dragon spacecraft and Falcon 9 rocket to the International Space Station as part of the agency's Commercial Crew Program. Robert Behnken and Douglas Hurley are scheduled to launch at 4:33 p.m. EDT on May 27, from Launch Complex 39A at the Kennedy Space Center. (Photo by Bill INGALLS / NASA / AFP) / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT

POVIJESNI OBRAT

VELIKA AMERIČKA 'SRAMOTA' NAPOKON DOLAZI KRAJU Astronauti nakon 9 godina više neće morati ruskim raketama u svemir, sada ih 'vozi' Musk

prije 11 sati

, Image: 160297770, License: Rights-managed, Restrictions: , Model Release: no, Credit line: NG Images / Alamy / Alamy / Profimedia

NEOBIČNO OTKRIĆE

NASA JE MOŽDA PRONAŠLA DOKAZ O POSTOJANJU PARALELNOG SVEMIRA No, to je tek početak: 'Isto ga je stvorio Veliki prasak, ali tamo vrijeme ide - unatrag'

prije 4 dana

ASTRONOMI OTKRILI CRNU RUPU NAJBLIŽU ZEMLJI Od nas je udaljena je tisuću svjetlosnih godina, odale su je dvije sjajne zvijezde

prije 3 tjedna

The Surreal World of Neutrino Detectors
Neutrinos are one of the fundamental particles which make up the universe, but not in the way electrons, protons and neutrons are. These particles are extremely tiny, nearly massless and electrically neutral so they are not affected by electromagnetic forces and react very weakly with other particles of nature. Neutrinos are produced by the decay of radioactive elements in nuclear reactions such as in the core of the sun or exploding stars. Once born, they travel in straight lines at the speed of light passing through solid matter almost entirely unhindered. Although tiny, they carry a colossal amount of energy Ń some of these carry the same amount of energy as a well hit tennis ball. To detect these particles using the same technology they use at the Large Hadron Collider in Switzerland, one would require a ring of magnets the size of Earth's orbit around the Sun.
Neutrino detectors therefore use entirely different kind of science and technology. Some detectors use large tanks filled with water and surrounded by photomultiplier tubes that watch for radiation emitted when an incoming neutrino creates an electron or muon in the water. Other detectors have tanks filled with chlorine or gallium or other liquids. Neutrino detectors are often built underground, to isolate the detector from cosmic rays and other background radiation.
The Super-Kamiokande neutrino detector is located 1,000 meters under Mount Kamioka near the city of Hida, in Japan. The detector consist of a cylindrical stainless steel tank 41 meters by 39 meters holding 50,000 tons of ultra-pure water and surrounded by more than 11,000 photomultiplier tubes (PMT). It is one of the largest detector of its kind.
When a passing neutrino interacts with the electrons or nuclei of water, it can produce a charged particle that moves faster than the speed of light in water. This creates a cone of light known as Cherenkov radiation, which is the optical equivalent to a sonic boom. The Cherenkov light is projected as a ring on the wall of the detector and recorded by the PMTs. Using this data scientists can determine the direction of the source and the flavor of the incoming neutrino.
©Exclusivepix Media, Image: 254086191, License: Rights-managed, Restrictions: , Model Release: no, Credit line: Exclusivepix Media / Exclusivepix / Profimedia

NAJVEĆA TAJNA KOZMOSA

ZNANSTVENICI NA KORAK DO RJEŠENJA MOŽDA I NAJVEĆEG MISTERIJA UNIVERZUMA Zašto u svemiru ne vlada balans koji se očekivao nakon Velikog praska?

prije 1 mjesec

This NASA photo released on August 27, 2019 shows West Point graduate, physician and NASA astronaut Andrew Morgan working outside the International Space Station during a six-hour and 32-minute spacewalk to install the orbiting lab�s second commercial crew vehicle docking port, the International Docking Adapter-3 (IDA-3)on August 21, 2019. - Boeing's CST-100 Starliner and SpaceX's Crew Dragon spacecraft will dock at the adapters in the near future when bringing astronauts to the station as part of NASA's Commercial Crew Program. On August 21,2019 Morgan and fellow astronaut Nick Hague installed the IDA-3 to Pressurized Mating Adapter-3 on the space-facing side of the station�s Harmony module. (Photo by HO / NASA / AFP) / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT

ZEMLJA SE PROMIJENILA

'POSVE JE NADREALNO ŠTO SE DOGAĐA DOLJE...' Astronauti koji su u svemir otišli dok korona još nije bila na vidiku kao da se vraćaju na drugi planet

prije 1 mjesec

ZNAČAJNO OTKRIĆE

'OVO BI MOGLA BITI KARIKA KOJA NEDOSTAJE' Astronomi dokazali postojanje dosad 'neuhvatljivih' crnih rupa: 'Jedna zvijezda joj se previše približila'

prije 2 mjeseca

POZITIVNA STRANA

VIDI SE IZ SVEMIRA Značajno smanjene emisije dušikovih dioksida, ugljikovih monoksida i dioksida zbog izolacije stanovništva od korone iznad Italije!

prije 2 mjeseca

Universe with stars and galaxies in outer space showing the beauty of space exploration 3D Rendering, Image: 335564420, License: Royalty-free, Restrictions: , Model Release: no, Credit line: Profimedia, Panthermedia

NOVA PERSPEKTIVA

Znanstvenici kažu da bi naše temeljne mjere svemira mogle biti pogrešne

prije 3 mjeseca

Supernova remnant. X-ray space telescope image of the centre of the 3C58 supernova remnant. This region contains a rapidly spinning neutron star (pulsar) surrounded by a thick ring, or torus, of X-ray emission. The pulsar has also produced jets of X-rays that are blasting away from it to the left and right. These jets are responsible for creating the elaborate web of loops and swirls shown here. Imaged by the Chandra X-ray Observatory in low (red), medium (green) and high (blue) energy X-rays., Image: 222842414, License: Rights-managed, Restrictions: , Model Release: no, Credit line: Science Photo Library / Sciencephoto / Profimedia

ZABILJEŽILI ZNANSTVENICI

NAJJAČA EKSPLOZIJA U SVEMIRU NAKON VELIKOG PRASKA! Oko 390 milijuna svjetlonosnih godina od Zemlje supermasivna crna rupa ostavila udubinu u galaksiji

prije 3 mjeseca

Zagreb, 170220.
FER.
Dario Bojanjac i Stefan Cikota, mladi znanstvenici koji su autori projekta znanstvenih plakata u suradnji s Jutarnjil listom.
Na fotografiji: Dario Bojanjac, Stefan Cikota.
Foto: Ronald Gorsic / CROPIX

NAMIJENJENI POSEBICE UČENICIMA

JUTARNJI U SURADNJI S FER-om OBJAVLJUJE PLAKATE O SVEMIRU 'Želimo mlade potaknuti da se bave znanošću'

prije 3 mjeseca