(Image Credit: NASA/JPL-Caltech/ASU/MSSS/SSI) This week in stories we’re covering at The Debrief: an archaeologist has finally decoded mysterious stone inscriptions on a 2,200-year-old gate that have stumped researchers for centuries. Elsewhere, you’ve got to see these images of what NASA’s Perseverance rover just spotted behind the Martian moon Phobos. Also, researchers have revealed the first temporal photonic crystal, and it’s taking light in…