Geek: A new scientific idea can only become a theory when it has been tested and its predictions verified. The bigger the claim, the more evidence is usually needed to prove it. Theories that redefine the nature of the universe are a rarity, but Einstein’s general theory of relativity falls into that category.
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.
