Physicsworld: A new type of semiconductor laser that can be easily modified to create light over a range of different colours has been created by researchers in the US. The device is based on tiny particles called colloidal quantum dots (CQDs) that emit different colours of light according to their size – rather than their chemical composition.
The supermassive black hole is 40 million times as massive as the sun and powers a quasar that existed 700 million years after the Big Bang.
Vision Pro is here and it’s a surprisingly capable device. Apple has also loaded the headset with a ton of options and features that aren’t obvious at first glance.
Engineers expect to lose contact with the private US moon lander Odysseus on Tuesday, cutting short the mission after its sideways touchdown last week.
