The universe is We are constantly beaming its history. For example: information about what happened long ago, Long Previously, it included long-wave radio waves that were ubiquitous throughout the universe, possibly detailing how the first stars and black holes formed. There is a problem though. Because of our atmospheric and noise radio signals produced by modern society, we cannot read them from Earth.
That’s why NASA is in the early stages of planning what it will take to build an automated research telescope at a distance from the moon. Will create one of the most ambitious proposals Lunar Crater Radio Telescope, The largest (abundant) full-aperture radio telescope dish in the universe. Another pair of projects, called FarSide And Farview, The antennas will connect a wide array – eventually more than 100,000, many of which were built on the moon itself and its surface elements were made to pick up the signals. The projects are all part of NASA’s Institute for Advanced Concepts (NIAC) program, which funds innovators and entrepreneurs to prioritize radical ideas in the hope of creating timeless space concepts. Although they are still many years away from speculation and reality, the results obtained from these projects could reshape our cosmic model of the universe.
“With our telescopes on the moon, we can engineer the retrograde of the radio recorder we recorded and determine the properties of the first stars for the first time,” said Jack Burns, an assistant expert at the University of Colorado Boulder and co-fireside and farview for both. “We care about those first stars because we care about our own origins – so where do we come from? Where did the sun come from? Where did the earth come from? The Milky Way? “
The answers to this question come from a faint moment in the universe about 13.7 billion years ago.
When the universe cooled down about 400,000 years after the Big Bang, the first atoms, neutral hydrogen, released their photons into a burst of electromagnetic radiation that scientists can still see. This cosmic microwave background, or CMB, was first detected in 19464. Scientists are currently using complex tools such as the European Space Agency’s Planck probe to detect minute fluctuations, creating snapshots of the distribution of matter and energy in the young universe. Hubble (and soon, to collect visual data from Starlight via a telescope) scientists could quickly move about 13 billion years after the first star was formed or about a hundred million years to study most of the “Cosmic Dawn” and upgrade the James Webb). They allow us to look so far that we are literally looking at the past.
After the initial fireball from the Big Bang faded into the CMB, but before the first stars started burning, there was a time when almost no light was emitted into the universe. Scientists refer to this period as “cosmic dark ages” without visible or infrared light. During this era, perhaps the universe seemed to be very simple, consisting mostly of neutral hydrogen, photons and dark matter. Evidence of what happened during this period can help us understand how dark matter and dark energy – which by our best guesses make up about 95 percent of the mass of the universe, are mostly invisible to us and in the form of structures that we still do not understand true.
There is a clue as to what happened while hiding in the glittering hydrogen around the cosmic Dark Ages that still make up the majority of the known matter in the universe. Each time the spin of the electrons in the hydrogen atom is reversed it gives a radio wave at a certain wavelength: 21 centimeters. But the wavelengths expressed in the cosmic Dark Ages are not 21 centimeters long until they reach Earth. As the universe expands rapidly, hydrogen wavelengths also expand or “red-shift” when they cover wider distances. This means that the length of each wave is like a timestamp: the longer the wave, the greater. They are about ten or even 100 meters long, with frequencies below the FM band when they reach Earth.