Subscription Center
Oscillations inside the giant planet perturb its rings, promising new clues to the nature of its enormous interior
Scientists plan to use the intrepid space probe to observe uncharted worlds
A newborn star's iron abundance foretells whether its gas giants face a violent future
Two intrepid galaxies dash past the Milky Way—and dazzle astronomers with their beauty and brilliance as new observations reveal why the pair is so flamboyant
Hubble observations of a speedy galaxy weigh on the Milky Way and indicate that our galaxy is at least a trillion times as massive as the sun
Long thought nearly extinct, the Andromedid meteor shower staged a surprise outburst last December—and may return in 2018 and 2023
A new model suggests that short-period binary stars are rare because they tend to merge into one
Hot stars booted out of their galactic homes may be responsible for creating the conditions that led to today's universe
Exploding white dwarf stars and an unexpected abundance of iron explain the chemistry of a unique star cluster
A simple diagram, which celebrates its centennial this year, continues to serve as the most essential conceptual tool in stellar astrophysics
See what we're tweeting about
sciamblogs To sleep perchance to learn http://t.co/vrbci3whNL by @illusionchasers at #SciAmBlogs
BoraZ To sleep perchance to learn http://t.co/UVgr2lRQxT by @illusionchasers at #SciAmBlogs BoraZ Friday links: can you identify any ecosystem on sight, why papers get rejected, your state bird is lame, and more http://t.co/q7Wc644Tm7
Deadline: Jul 25 2013
Reward: Varies
This challenge provides an opportunity for Solvers to build a web-based or mobile “app” to explore data relationships in scholarly conte
Deadline: Jul 30 2013
Reward: $100,000 USD
The Seeker desires a method for producing pseudoephedrine products in such a way that it will be extremely difficult for clandestine che
Powered By: 
YES! Send me a free issue of Scientific American with no obligation to continue the subscription. If I like it, I will be billed for the one-year subscription.
