World Truth

The surface of the red giant star Π¹ Gruis from PIONIER on the VLT. Credit: ESO "This is the first time that we have such a giant star that is unambiguously imaged with that level of details,&qu…

The red giant Betelgeuse, once so large it would reach out to Jupiter's orbit if placed in our own solar system, has shrunk by 15 percent over the past decade in a half, although it's just as…