
Giant Black Hole Spins at Half Light-Speed
The half-the-speed-of-light spin of a giant black hole suggests it grew by digesting another black hole in a galaxy merger. Clara Moskowitz reports
Clara Moskowitz is chief of reporters at Scientific American, where she covers astronomy, space, physics and mathematics. She has been at Scientific American for more than a decade; previously she worked at Space.com. Moskowitz has reported live from rocket launches, space shuttle liftoffs and landings, suborbital spaceflight training, mountaintop observatories, and more. She has a bachelor’s degree in astronomy and physics from Wesleyan University and a graduate degree in science communication from the University of California, Santa Cruz.

Giant Black Hole Spins at Half Light-Speed
The half-the-speed-of-light spin of a giant black hole suggests it grew by digesting another black hole in a galaxy merger. Clara Moskowitz reports

Equations Are Art inside a Mathematician’s Brain
A brain area associated with emotional reactions to beauty activates when mathematicians view especially pleasing formulas

Book Review: Computing with Quantum Cats
Reviews and recommendations from Scientific American

Ancient Roman Lead Melted Down to Explore the Frontiers of Physics
Scientists draw battle lines over metal salvaged from ancient shipwrecks

NASA Adopts Changes to Prevent Recurrence of Dangerous Spacesuit Leak
A leak that put an astronaut at risk of drowning during a spacewalk could have been prevented if the problem was recognized earlier, an investigation found

Meet the Dropleton—a “Quantum Droplet” That Acts Like a Liquid
Physicists have created a new composite "quasiparticle" that could help probe the quantum mechanics of many particles working together

Hundreds of New Exoplanets Validated by Kepler Telescope Team
A trove of 715 planets—all members of multiworld systems—joins the list of Kepler's finds

Moon-Smashing Meteorite Recorded by Astronomers
Spanish astronomers spotted a meteoroid impact at 61,000 kilometers per hour using a telescope network that automatically scans the moon. Clara Moskowitz reports

How Black Holes Led to the Creation of Web Browsers
Basic science research has an image problem. People object to spending public money on studies that could never affect them. Lawmakers routinely call out obscure-sounding math, physics and biology research as a waste of taxpayer funds.

Hubble Finds Possible Oldest Object Ever Seen
The Hubble Telescope's new set of Frontier Fields images includes a galaxy some 13-billion light-years away, which makes it a candidate for the most distant object ever seen. Clara Moskowitz reports

Cosmic Mismatch Hints at the Existence of a "Sterile" Neutrino
A disagreement between observations of galaxy clusters and the cosmic background radiation could be explained by the existence of a fourth type of neutrino

Review: Particle Fever
Reviews and recommendations from Scientific American

Book Review: The Extreme Life of the Sea
Reviews and recommendations from Scientific American

We Celebrate a Galilean Anniversary
Galileo—who, among many accomplishments, was first to use a telescope to discover moons around Jupiter—was born 450 years ago this week. Clara Moskowitz reports

Winter in the Antarctic Shows What It Will Take to Live on Mars
Concordia station offers the isolation and hardships explorers will face on the Red Planet. Here, where participants can’t be rescued from an unforgiving environment, the danger is real

From Gadgets to Galaxies: Conference Reports
Scientific American technology editor Seth Fletcher talks about the recent Consumer Electronics Show and astronomy editor Clara Moskowitz discusses last month's American Astronomical Society conference

Wacky World Wobbles Wildly
Exoplanet Kepler 413 b's tilt can vary by as much as 30 degrees over 11 years, leading to extremely erratic seasons. Clara Moskowitz reports

NASA's Troubled $8-Billion Hubble Successor Is Back on Track [Slide Show]
After setbacks, delays and cost overruns that almost led to its cancellation, “the telescope that ate astronomy” should be able to meet its 2018 launch date

Women Physicists Keep Female Students Psyched
At the West Coast Conference for Undergraduate Women in Physics, 170 female students gathered to hear from physicists and share their research. Clara Moskowitz reports

Chemistry Calculations Reveal a New Kind of Bonding
Extreme conditions yield exotic molecules

Continental Telescope Array Could Usher Astronomy Revolution in Africa
Able to detect light from the first stars just 380,000 years after the big bang, the Square Kilometer Array will be the world's biggest radio observatory and promises to spur science and economic development in Africa

Comet Spacecraft Wakes from Slumber
On January 20th the European Space Agency woke its Rosetta probe after two-and-a-half years in hibernation, in preparation for its final approach to a comet

‘Supernova’ Cave Art Myth Debunked
Thousands of years ago a star exploded in a supernova, leaving behind the glorious riot of colored gas we see now as the Crab Nebula. The light from this explosion reached Earth in 1054 A.D., creating what looked like a new bright star in the sky as recorded by ancient Chinese and Arab astronomers.

New Cosmic Distance Measurement Points the Way to Elusive Dark Energy
Astronomers have measured a distance scale in the universe to unprecedented accuracy, opening the door to better tests of dark energy models than ever before