Strange gravitational wave echoes may let us probe dark matter

When gravitational waves pass over massive objects, they should create an echo that could allow us to examine objects that we can’t otherwise see, including dark matter Space 27 January 2022 By Leah Crane An illustration of gravitational waves Shutterstock The entire universe is suffused with gravitational waves, ripples in space-time caused by the motion … Read more

Could Echoes from Colliding Black Holes Prove Stephen Hawking’s Greatest Prediction?

In 1974 Stephen Hawking theorized that black holes are not black but slowly emit thermal radiation. Hawking’s prediction shook physics to its core because it implied that black holes cannot last forever and that they instead, over eons, evaporate into nothingness—except, however, for one small problem: there is simply no way to see such faint … Read more

Could Echoes from Colliding Black Holes Prove Stephen Hawking’s Greatest Prediction?

In 1974 Stephen Hawking theorized that black holes are not black but slowly emit thermal radiation. Hawking’s prediction shook physics to its core because it implied that black holes cannot last forever and that they instead, over eons, evaporate into nothingness—except, however, for one small problem: there is simply no way to see such faint … Read more