II* : @ h H h ( 1 2 ; ! = C( L I 81 t i s s H A Chandra X-ray Observatory image of the supernova remnant SNR 0509-67.5 in the Large Magellanic Cloud. The lowest energy X-rays are shown in red, the intermediate energies are green and the highest energies are blue. In 2004, scientists used Chandra to show that SNR 0509-67.5 was likely caused by a Type Ia supernova, using an analysis of the elements, such as silicon and iron, that were detected. A Type Ia is thought to result from a white dwarf star in a binary system that reaches a critical mass and explodes. In the new X-ray study of SNR 0509-67.5, spectra from Chandra and ESA's XMM-Newton Observatory were used to calculate the amount of energy involved in the original explosion, using an analysis of the supernova remnant and state-of-the-art explosion models. ^ ص @ x L j \ ( \ . $ Q ` d $ ΅ 0 P "* \ *z s t Bj Xf g Zm s N Du (x b hu V k _ ^ D Vv 65 x' 2k \ V z 8 b" & * 4/ 3 7 ; &@ PD H L P :U `Y ] a e $j v & 8 0 7 7 2 9 0 7 M ' 2 J * , ; 9 4 ? 5 [ , A5 > H V g_ ` 1a bc wg >i