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A mission from NASA has discovered there may be a lot fewer galaxies than initially believed, opening up the possibility humanity is alone in the universe.
As one of the authors of the new study has explained, the focus of their attention, the so called cosmic optical background, essentially “puts a constraint on the total...
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 gl...
The mystery surrounding the whereabouts of a supermassive black hole has deepened, researchers say. Despite searching with NASA’s Chandra X-ray Observatory and Hubble Space Telescope, astronomers have no evidence that a distant black hole estimated to weigh between 3 billion and 100 billion times the mass of the sun is anywhere to be found. This missing black hole should be in the enormous galaxy in the center of the galaxy cluster Abell 2261, which is located about 2.7 billion light-years from Earth. Nearly every large galaxy in the universe contains a supermassive black hole in their cent...
[1] and Hubble Space Telescope, astronomers have no evidence that a distant black hole [2] estimated to weigh between 3 billion and 100 billion times the mass of the Sun is anywhere to be found. This missing black hole should be in the enormous galaxy in the center of the galaxy cluster [3] Abell 2261, which is located about 2.7 billion light years [4] from Earth. This composite image of Abell 2261 contains optical data from Hubble and the Subaru Telescope showing galaxies in the cluster and in the background, and Chandra X-ray data showing hot gas (colored pink) pervading the cluster. ...