Physics Today
@physicstoday
Physics Today is the world's most popular physics magazine.
(Header image: @ClaireLamman for Physics Today; see physicstoday.org/doodle)
ID: 20608701
https://physicstoday.org 11-02-2009 18:23:39
27,27K Tweet
652,652K Followers
270 Following
The Cygnus constellation is a recognizable sight in the night sky, but it takes patience and special filters to photograph the Western Veil Nebula contained within. Learn more about the nebula in August’s edition of Back Scatter: doi.org/10.1063/pt.fwd… 📸: Imran Sultan
Dark-matter histories typically center on observations by Fritz Zwicky and Vera Rubin. But equally important, writes Jaco de Swart in #PhysicsToday, was the 1974 realization that they implied that the universe was “missing” a large quantity of matter. doi.org/10.1063/pt.ozh… 📸: