Why are astronomical jets always concentrated like a laser?

Why are the jets emitted by black holes or neutron stars always concentrated like a laser? Craig CaseTwain Harte, California Astrophysical jets are rapid outflows from a central object that become focused into a narrow cone.  Jets are everywhere in astrophysics: They occur near supermassive black holes like the 6-billion-solar-mass […]

Impressions from a test ride in London in a car using Wayve’s self-driving tech; Wayve has raised $1.3B since launch and is testing cars with Level 2+ autonomy (John Thornhill/Financial Times)

John Thornhill / Financial Times: Impressions from a test ride in London in a car using Wayve’s self-driving tech; Wayve has raised $1.3B since launch and is testing cars with Level 2+ autonomy  —  John Thornhill takes an autonomous spin through the city’s tangled streets with the British start-up’s chief […]