Bonobos' estimated population is less than 50,000.
In high-energy physics , jet quenching is a phenomenon that can occur in the collision of ultra-high-energy particles .. high-energy physics. high-energy physics. collision. collision. jet. jet ( particle physics ). In general , the collision of high-energy particles can produce jets of elementary particles that emerge from these collisions .. collision. collision. Collisions of ultra-relativistic heavy-ion particle beams create a hot and dense medium comparable to the conditions in the early universe , and then these jets interact strongly with the medium , leading to a marked reduction of their energy .. ultra-relativistic. ultra-relativistic. heavy-ion. heavy-ion. early universe. early universe. This energy reduction is called `` jet quenching '' .. jet. jet ( particle physics )