This is an annotated Hubble Space Telescope image of the Little Dumbbell Nebula, located 3,400 light-years away in the northern circumpolar constellation Perseus. The object gets its name from its …
Wang, Z., Chong, Y., Joannopoulos, JD and Soljai, M. Observation of one-way backscattering immune topological electromagnetic states. nature Chapter 461772775 (2009). ArticleADS Google Scholar Kane, CL & Mele, EJ Size, …
On April 24, to celebrate the 34th anniversary of the launch of NASA’s legendary Hubble Space Telescope, astronomers took a snapshot of the Little Dumbbell Nebula (also known as Messier …