New Scientist - ATOMIC clocks are the basis of GPS devices, they define the official length of the second and recently played a role in tracking subatomic particles that seemingly travelled faster than the speed of light. Now this "ultimate" timekeeper has a rival: a new method for making nuclear clocks suggests such devices could be 60 times as accurate as their atomic rivals.
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.
