Home / Science / Astronomers misunderstand the number of galaxies in the universe.

Astronomers misunderstand the number of galaxies in the universe.

Can astronomers misunderstand the number of galaxies in the universe? What if the universe was slightly darker than expected? Galaxies were many fewer years than expected? It seems, according to new data harvested by NASA’s New Horizon spacecraft, leaving the inner solar system illuminated is the best way to determine how many galaxies might exist within the invisible phase, which is what. New Horizons actually did it earlier. Measurements by the Hubble Space Telescope suggest that there are 2 trillion galaxies scattered across the universe. But the latest discovery represents just hundreds of billions of galaxies instead. The new NASA mission estimates the number of galaxies to be half the number of galaxies previously estimated for years in a new study. Published in Astrophysical Journal And presented Wednesday at the 237th meeting of the American Astronomical Society.

NASA’s New Horizons mission was flown by Pluto, 4 billion miles from Earth, on the edge of our solar system in both 2015 and 2019, the study said the spacecraft was at a huge distance. The sky observed was 10 times darker than the darkest sky Hubble observed. “It’s an important figure to note: how many galaxies are there?” Said co-researcher Marc Postman, a renowned astronomer at the Space Telescope Science Institute in Baltimore, in a statement reported by CNN. Two trillion galaxies “” tried all the galaxies that Hubble could see, doubling that number, and that’s what we saw. But nothing more, ”said lead author Tod Lauer, an astronomer from The National Science Foundation’s Optical-Infrared Astronomy Research Laboratory said in an earlier statement, astronomers believe that 90 percent of galaxies in the universe are still hidden from Hubble’s view. Hubble orbits Earth from a distance of 340 miles only and has to contend with light pollution from an effect known as the zodiac light, as the Earth sits in a corner of the Solar System dusty from asteroids and comets. Those dust particles reflect sunlight, thus creating the zodiacal light.Previous galactic estimates were determined by astronomers to count every visible galaxy in the deep Hubble field and multiply by the total area of ​​the sky. The study explains that the background glows in the universe. Called Cosmic Light Background, it is the visible light of the halo associated with the Big Bang, which is called the Cosmic Microwave Background. “While the cosmic microwave background tells us about the first 450,000 years after the Big Bang was born. The background tells us something about the sum of all the stars that have formed since then, ”the Postman said.“ There is a limit to the number of all galaxies that have been created and where they may be in. At that time, “New Horizons gave us a better viewpoint to measure the background of cosmic light than anyone could,” Lauer said.

Source link