Astronomers search for sources of mind-bending gravitational hum permeating the universe A massive hum of energy pervades the universe. Is it supermassive black holes or something weirder?

This gives a decrease in gravitational potential energy of -45.86 joules. For the increase in thermal energy, of course, I need the change in temperature. It went from 24.9 C to 25.1 C.

A science education center opens for visitors to the Hanford LIGO observatory near Richland, Washington. Gov. Inslee helped open the $8.1 million center on gravitational waves in space.