According to Glen Cathey, Dark Matter results constitute:

Dark matter is hypothesized to make up about 27% of the universe's mass-energy content but does not emit, absorb, or reflect electromagnetic radiation, making it invisible and detectable only through its gravitational effects. Despite extensive efforts, scientists have yet to directly observe dark matter particles or fully understand their properties.Similarly, dark energy is believed to be responsible for the observed accelerated expansion of the universe. It comprises approximately 68% of the universe's mass-energy content and is characterized by negative pressure, causing the expansion of the universe to accelerate over time. However, the nature and origin of dark energy remain elusive, posing a significant challenge to physicists.Understanding the true nature of dark matter and dark energy is crucial for developing a complete and accurate model of the universe's structure and evolution. Researchers are actively working on various experimental and theoretical approaches to unravel these mysteries, but they remain among the most compelling and unsolved questions in modern physics.

Dark matter is a little-understood form of matter composed of particles that do not absorb, reflect, or emit light. Recently, physicists have revived the idea that dark matter is actually formed from the remains of primordial black holes created during the Big Bang. This claim was echoed by researchers in a 2017 paper who used mathematical models to estimate the characteristics, size, and location of primordial black holes. Which finding, if true, would most directly support the physicists' claim?Primordial black holes are estimated to have been too small to account for all the dark matter theorized to exist in the universe.eliminateExcess infra-red radiation that has been detected in the universe is found to be attributable to primordial black holes.eliminateThe theorized arrangement of dark matter is found to match the theorized arrangement of primordial black holes.eliminateEvidence emerges that suggests that primordial black holes grew into the supermassive black holes that are observable in the universe today.

Which of the following are NOT possible candidates for dark matter?Group of answer choicesBlack holesBrown DwarfsMACHO'sRed Giant Stars

What is the experimental evidence for the existence of dark energy?

Which of the following indicates dark matter in a galaxy?The recommended time to answer this question is 2.5 minutes.Soru 25YanıtMost stars orbiting the galactic center have similar velocities.The galaxy is brighter than expected.The presence of a bar-like structure in the bulge of the galaxy.The diameter of the disk of the galaxy increases over time.The stars in certain regions of the galaxy appear fainter than they should be.