Nova Delphini appeared in our skies in 2013 when material falling onto a white dwarf star from its companion red giant exploded in a thermonuclear fireball. The expanding fireball was beautifully captured in these first ever images made by the CHARA array, an optical interferometer. This very nice piece of work, led by Dr Gail Schaefer, shows the power of optical interferometry to reveal ever finer details of the universe. Read more in the press release.
Images of the expanding thermonuclear fireball of Nova Delphini 2013. Adapted with permission from image by Georgia State University CHARA Array.