Often forgotten, however, are the real-life astronomers who kind of already do it.
Right now, they should be making more stars than ever.
“But for some reason, they have shut down.
They’re no longer forming new stars.”
But hold on, you’re probably still on that bit about astronomers going back in time.
If they can swing that, why didn’t they show up toStephen Hawking’s famous time-traveler-only dinner party?
We need this term as a measurement because light doesn’t travel instantaneously.
That means moonlight has about a one-second lag for us Earthlings.
In effect, when we glance at the moon, we’re seeing everything one second after it happens.
We’re sort of looking back in time.
Astronomers scale that concept up by the billions.
Using powerful telescopes as time machines, they look intodeepspace – like, billions of light-years away.
Lo and behold, that’s how they solved the cosmic puzzle.
The researchers say the galaxies either burned through their cold gas supply too quickly or are blocked from replenishment.
Basically, the lens' viewpoint traveled along a line decorated by hundreds of other galaxy clusters.
