

Hawking radiation is not a confirmed effect and it is unique to event horizons not black holes. A naked singularity would have mass spin and charge but no hawking radiation. There are many types of event horizons and all of them have hawking radiation.






Long dates are often uranium series dating using zircon crystals and a known baseline that can date things into the billions of years. When zircon is formed it excludes lead and includes uranium. The end of the decay chain of uranium is lead. The lead to uranium ratio will give you the age of the crystal. This means anything that includes that crystal is younger.