'Hidden' stars including a new type of elderly giant nicknamed an 'old smoker' have been spotted for the first time by astronomers. The mystery objects exist at the heart of our Milky Way galaxy and ...

May 16 -- FRIDAY, May 15 (HealthDay News) -- Highlighting the negative impact tobacco use has on cardiovascular health, researchers say that heavy smokers were 2.5 times more likely to die than their ...

Artist's impression of a cloud of smoke and dust being thrown out by a red giant star. Seen from the left the star remains bright but if viewed from the right it fades to invisibility. Credit: Philip ...