Tag: weigh
How to Weigh a Black Hole
The UniverseFridays How Do You Weigh a Black Hole? Gauging the mass of a black hole is tricky, but astronomers have devised multiple methods to measure the heft of these galactic gluttons By Phil Plait edited by Lee Billings This jagged jumble of pixels may look like a rainbow-colored thunderbolt, but it’s actually a spectrum…
As Trump hikes tariffs again, nervous businesses weigh what comes next
US President Donald Trump is ripping up the rulebook on trade that has been in place for more than 50 years. His latest round of sweeping tariffs, which came into force shortly after midnight on Wednesday, hits goods from some of America’s biggest trading partners including China and the European Union with dramatic hikes in…