The quasar group appears to violate a widely accepted assumption known as the cosmological principle, which holds that the universe is essentially homogeneous when viewed at a sufficiently large scale. Calculations suggest that structures larger than about 1.2 billion light-years should not exist, researchers said.
Human respiration rate is measured when a person is at rest and involves counting the number of breaths for one minute by counting how many times the chest rises. An optical breath rate sensor can be used for monitoring patients during a magnetic resonance imaging scan.
Even as you sit reading this article, all the cells of your body are producing a baseline level of carbon dioxide; the amount produced in this state determines your normal respiratory rate. The diaphragm, the primary muscle of breathing, is the only one required for this level of respiration.