Our telescope is sensitive enough that you actually can see a charcoal briquette against a black sky from ten times the distance from New York to Los Angeles, said Lu.
Remarkable.Diamonds, crystallized carbon. Every day, people go to the grocery store and come home with sacks full of carbon in the form of charcoal briquettes that they toss in their barbeques and set on fire.
So, what we want to do is build a spacecraft called The Sentinel, and as we say " it's like looking for a charcoal briquette in the dark" , these things are hard to find.