Page 2 - தேசிய அறிவியல் அடித்தளம் ஒளியியல் News Today : Breaking News, Live Updates & Top Stories | Vimarsana

There may be fewer galaxies in the universe than we thought CNN 1/13/2021 By Ashley Strickland, CNN © Zolt Levay/Space Telescope Science Institute This photo shows a phenomenon known as zodiacal light. At lower left, a glowing patch extends to the upper right in the direction of Jupiter, the bright object left of center. Zodiacal light is caused by sunlight reflecting off tiny dust particles in the inner solar system the disintegrated remains of comets and asteroids. Attempts to measure how dark space is using telescopes like Hubble have been thwarted by this ambient glow. As a result, astronomers relied on NASA s distant New Horizons spacecraft to observe the sky free from zodiacal light. The faint background they measured is the equivalent of seeing a neighbor s refrigerator light from a mile away. This very wide, multi-frame panorama was taken in October 2014 at Canyon de Chelly National Monument in northeast Arizona. The zodiacal light is at left, wit

New horizonsUnited statesCanyon de chelly national monumentTod lauerMarc postmanAstronomy research laboratoryEuropean space agency hubbleSpace telescope science institute in baltimoreZolt levay space telescope science instituteAmerican astronomical societyNational science foundation opticalMilky wayPraesepe clusterSpace telescope science institute thisHubble space telescopeEuropean space agency