The universe is still speeding up, but nobody knows why - Science Daily

The dark nebula Barnard 68, a dense cloud of dust that blocks the light of stars behind it, creating the appearance of a hole in space. This is an illustrative image, not the location of the mysterious JWST detection. (ESO) In the southern constellation of Fornax lies a tiny patch of sky just like any other. Your eyes may have brushed past it a hundred times without a thought. Yet this otherwise unremarkable speck of the cosmos is among the most well-cataloged in the sky. The Hubble Space Telescope stared at it for more than 270 hours to obtain its famous Ultra Deep Field (HUDF) – and contained therein are nearly 10,000 galaxies extending billions of light-years into the Universe. When the James Webb Space Telescope (JWST) launched, it was only natural that its golden mirrors would turn to the same region of space, using its vastly more sensitive infrared capabilities to find what Hubble may have missed. Now, it has revealed that a patch of space astronomers have been poring over for decades may yet hold some surprises. In a tiny corner of the tiny field, JWST detected a strange signal – not once, but twice, in observations nearly three months apart. There's just one problem.