Hubble captures views of mammoth stars   This Hubble image shows a pair of massive stars, WR 25 and Tr16-244, located within the open cluster Trumpler 16. This cluster is embedded within the Carina Nebula, an immense cauldron of gas and dust that lies approximately 7500 light-years from Earth in the constellation of Carina, the Keel. WR 25 is the brightest, situated near the centre of the image. The neighbouring Tr16-244 is the third brightest, just to the upper left of WR 25. The second brightest, to the left of WR 25, is a low mass star located much closer to Earth than the Carina Nebula.   In Tr16-244 two of the stars are so close to each other that they look like a single object, but Hubble's Advanced Camera for Surveys shows them as two.   WR 25 and Tr16-244, on the left of the image, are located within the open cluster Trumpler 16. This cluster is embedded within the Carina Nebula, an immense cauldron of gas and dust that lies approximately 7500 light-years from Earth in the constellation of Carina, the Keel. Release date: 1 December 2008