The Sciences
To Catch a Black Hole, Use a Black Hole
Astronomers exploit a remarkable supermassive black hole binary system to measure the primary black hole's spin
Life, Unbounded
Discussion and news about planets, exoplanets, and astrobiology
The Sciences
Where in the Universe?
Guess what these images are and earn your stripes as a cosmic sightseer
The Sciences
Hot Exoplanet Reveals Its Spin
The Hubble Space Telescope has used direct imaging to detect the spin of a hot, young gas-giant planet—a first for astronomy
The Sciences
Spacetime Ripples and the Human Condition
Our species just stepped into a cosmic future, yet we still starve and fight each other
The Sciences
Merging Black Holes: A Matter of Some Gravity
Two black holes merging can cast off a few percent of their total mass as gravitational waves in just minutes, sending the final object off on a high-speed journey through the universe...
The Sciences
Where Everything Is in the Solar System, Right Now
NASA knows, and it maintains active archives of these data. Here are maps for the positions of known natural objects in the inner, outer and distant solar system in January 2016
The Sciences
Experience the Earth Like an Astronaut: Glittering Blue
A cleverly stitched together set of imagery from Japanese weather satellite Himawari 8 creates a jaw-dropping HD time-lapse of a day-in-the-life of Earth—this is Glittering Blue...
The Sciences
5 Questions and Answers about the Proposed Ninth Planet
A new analysis of outer solar system orbits suggests that there really could be a hitherto unseen giant planet orbiting far from the sun—but what are the implications?
Space & Physics
Walking on Enceladus
Newly released images from the Cassini mission's final close flyby of Saturn's icy moon Enceladus reveal further exquisite details of the surface terrain
The Sciences
Another Year, Another 20 Billion Kilometers Through The Universe
We live on a spinning and orbiting world, but we don't usually think about our other, greater motions through the cosmos—maybe we should
Blog Index
@ScientificAmerican
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Anecdotes from the Archive
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Anthropology in Practice
Exploring the human condition.
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Beautiful Minds
Insights into intelligence, creativity, personality, and well-being
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Budding Scientist
Everything you always wanted to know about raising science-literate kids
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Cross-Check
Critical views of science in the news
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Dark Star Diaries
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Dog Spies
Explore the science behind the dog in your bed
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Extinction Countdown
News and research about endangered species from around the world
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Eye of the Storm
The Science Behind Extreme Weather
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Frontiers for Young Minds
Science by and for kids ages 8-15
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Guest Blog
Commentary invited by editors of Scientific American
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Hot Planet
Climate science in a changing world
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Illusion Chasers
Illusions, Delusions, and Everyday Deceptions
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Life, Unbounded
Discussion and news about planets, exoplanets, and astrobiology
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Observations
Opinion, arguments & analyses from guest experts and from the editors of Scientific American
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Roots of Unity
Mathematics: learning it, doing it, celebrating it.
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Rosetta Stones
Adventures in the good science of rock-breaking.
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SA Visual
STAFFIllustrating science since 1845
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Talking back
STAFFA science blog, sans blague
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The Artful Amoeba
A Blog About the Weird Wonderfulness of Life on Earth
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Voices
Exploring and celebrating diversity in science.
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