radio signal

Groundbreaking discovery: Scientists detect radio signals from galaxy 9 Billion light-years away from EarthScientists have made an exciting discovery by capturing a specific type of radio signal from a galaxy located almost 9 billion light-years away from Earth. The galaxy, named SDSSJ0826+5630, was found to be emitting a radio signal with a specific wavelength called the "21 cm line," also known as the hydrogen line. This signal is emitted by hydrogen atoms and is used by astronomers to identify the location of galaxies…

Indian astronomers have detected a radio signal from a distant galaxy that is as old as around 9 billion years. The latest study looked back in time to the early universe to answer some of the most-asked questions - "How do stars form in the early galaxies?" To answer this, many astronomers have been trying to detect radio signals emitted by nearby galaxies. However, the difficulty to pick up the signal intensifies with the distance of the galaxy from the Earth. The vast expansion of the universe causes the reduction…

Exoplanets are those cosmic bodies or planets that orbit a star outside our solar system. According to NASA, more than 5,000 exoplanets have been confirmed to be detected so far. Researchers usually rely on the transit method to spot exoplanets. It uses optical telescopes for the purpose and has some limitations. Now, a new method has been drummed up that can help observe exoplanets at radio wavelength using a radio telescope. The transit method is a powerful tool where the brightness of a star is observed over time.If…

Demonstrating that a cloud of atoms can be used as a receiver to pick up video transmission, researchers have developed an atomic television. The television uses atom clouds and lasers to carry video signal that meets the traditional resolution standard. Atom-based communication systems are believed to be smaller and can tolerate more noise than conventional electronics. The atoms, used in the device, are prepared in high-energy Rydberg states, which are unusually sensitive to electromagnetic fields including radio…

Exoplanets are those cosmic bodies or planets that orbit a star outside our solar system. According to NASA, more than 5,000 exoplanets have been confirmed to be detected so far. Researchers usually rely on the transit method to spot exoplanets. It uses optical telescopes for the purpose and has some limitations. Now, a new method has been drummed up that can help observe exoplanets at radio wavelength using a radio telescope. The transit method is a powerful tool where the brightness of a star is observed over time.If…

Detecting light from the earliest stars and galaxies through clouds of hydrogen could soon be possible, according to researchers. Astronomers have aimed to detect a signal that is a thousand times weaker and other radio signals. Due to the clouds of hydrogen, which absorb light very effectively, using a radio telescope to trace the signal would result in distortions in the observation. Researchers at Cambridge University have created a methodology to eliminate these distortions, allowing them to look through the earliest…

Fuelling speculation over life beyond Earth, astronomers in China claimed to have detected signals from extraterrestrial civilisations. The signals were picked up by China's giant Aperture Spherical radio Telescope (FAST) measuring five hundred metres. It is also known as Sky Eye; and is the largest radio telescope in the world. Astronomers, from the Beijing Normal University, have made the claims of discovering “several cases of possible technological traces and extraterrestrial civilizations from outside the Earth.”As…