by Laurence COUSTAL Mariëtte Le Roux PARIS, France (AFP) — First postulated more than 230 years ago, black holes have been extensively researched, frequently depicted, even featured in sci-fi films. We’ve all seen the artists’ impressions and read of their ravenous star-gobbling feasts. But here’s the thing… science is still not 100 percent sure what they look like, how they behave or even that they exist. Telescopes have never seen a black hole, and the […]