(One light-years is the distance light travels in a year). That point should be a "cosmological horizon" of sorts — beyond which no telescope should be able to see. And, because nothing can ...

Nobody doubts that human activities have dramatically transformed Earth, so why has there been no official recognition of the ...

we don't necessarily need to travel 1,500 light years to get close to such a foreboding cosmological phenomenon. At least, we don't need to travel so far to experience an event horizon.

Cosmological data indicate that the universe has become more complex over its 13.8 billion-year history, with matter distribution appearing less clumpy than expected.