Number 117 (Story #2), March 8, 1993 by Phillip F. Schewe and Ben Stein THE EXTREME ULTRAVIOLET EXPLORER (EUVE) , launched by NASA in June, has yielded its first images. Among them are a couple of surprises: white dwarfs vary with unexpected diversity in the EUV wavelength range and at least seven sources outside the Milky Way were detected; this was surprising because scientists did not expect that the EUV could penetrate the interstellar medium so well. Also recorded were the first EUV images of the Moon and the Cygnus loop, the gaseous shell created from a supernova explosion that is colliding with the interstellar medium. Future EUVE investigations will look at the atmospheres of cool stars and compare them to the extensively studied corona of our Sun. (Science, 26 February 1993.)