The content you've requested is available without charge only to active Sigma Xi members and American Scientist subscribers.
If you are an active member or an individual subscriber, please log in now in order to access this article.
If you are not a member or individual subscriber, you can:
Black holes are among the most extreme and intriguing objects in the universe. They are also among the most difficult to study, being incredibly small and incredibly dark (that’s the “black” part) when left in isolation. But the massive black holes that live in the centers of most or all major galaxies are rarely left on their own. Instead they pull in nearby stars and gas, creating hot disks of plasma, mysterious jets of particles, and a cacophony of radiation. New techniques are bringing these black holes into view and starting to uncover the ways that they affect the overall form and evolution of galaxies. And black hole observations are about to get even better: A huge cloud of gas is about to fall into the central black hole in the Milky Way, touching off celestial fireworks, and the new global Event Horizon Telescope should make it possible to view black holes directly for the first time.
Connect With Us:
An early peek at each new issue, with descriptions of feature articles, columns, and more. Every other issue contains links to everything in the latest issue's table of contents.News of book reviews published in American Scientist and around the web, as well as other noteworthy happenings in the world of science books.
To sign up for automatic emails of the American Scientist Update and Scientists' Nightstand issues, create an online profile, then sign up in the My AmSci area.
JSTOR, the online academic archive, contains complete back issues of American Scientist from 1913 (known then as the Sigma Xi Quarterly) through 2005.
The table of contents for each issue is freely available to all users; those with institutional access can read each complete issue.
View the full collection here.
Receive notification when new content is posted from the entire website, or choose from the customized feeds available.