A fossilized Edmontosaurus skull with a Tyrannosaurus tooth still embedded in its face has given scientists rare evidence of a dramatic predator-prey encounter。 The discovery suggests the giant carnivore delivered an incredibly powerful face-to-face bite, offering new clues about how Tyrannosaurus hunted
The FCC authorized Reflect Orbital to launch the mirror satellite Eärendil-1。 “For optical astronomy, this poses an existential threat,” the European Southern Observatory said
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Experts explain how they work, what they can do, and what's still unsettled