
Gravitational Waves Probe Exotic Matter inside Neutron Stars
A new analysis of light and gravitational waves from colliding neutron stars helps reveal what’s inside these ultradense objects
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.

Gravitational Waves Probe Exotic Matter inside Neutron Stars
A new analysis of light and gravitational waves from colliding neutron stars helps reveal what’s inside these ultradense objects

Unprecedented 3-D view inside Animal Mummies
X-ray scans of ancient Egyptian cat, bird and snake mummies show details never seen before

World’s Largest Fusion Reactor Begins Assembly
The pieces are finally coming together on the long-delayed ITER experiment to create nuclear fusion

Seven Ways the Election Will Shape the Future of Science, Health and the Environment
Climate change, nuclear arms control, the pandemic and more will be determined by whoever wins the White House and Congress

Dissolving Candy Gives Mathematicians Insight into How Some Landscapes Form
Researchers observed a sugary treat underwater to understand the origin of spiky rock forests

Galileo and the Science Deniers
Four hundred years ago Galileo Galilei’s scientific findings were rejected because they didn’t fit the prevailing beliefs of the time. His story is disturbingly relevant today. Astrophysicist and author Mario Livio and Scientific American editor Clara Moskowitz to discusses lessons from Galileo’s life for dealing with science deniers now, plus a historical detective story about Galileo’s famous motto, “And yet it moves.”

Antimatter Discovery Reveals Clues about the Universe’s Beginning
New evidence from neutrinos points to one of several theories about why the cosmos is made of matter and not antimatter

Milky Way Dark Matter Signals in Doubt after Controversial New Papers
New analyses question whether mysterious gamma-ray and x-ray light in the galaxy actually stems from an invisible mass

Cosmology and Exoplanets Win 2019 Nobel Prize in Physics
James Peebles, who helped found the field of cosmology, shares the prize with Michel Mayor and Didier Queloz, discoverers of the first exoplanet around another sunlike star

New Measurement Aims to Solve Neutrino Mystery
A new finding limits how much the bizarre particle can weigh, shedding light on a physics quandary

Mysterious Neutrinos Get New Mass Estimate
Cosmic calculations suggest how massive nature’s lightest matter particle could be

Come One, Come All: Building a Moon Village
Humanity first went to the moon to make a point. Now it’s time to overcome rivalries and pitch in together

One Small Step Back in Time
Half a century after Apollo 11, we remember how we achieved the impossible and why we need to do it again

What Happened to All of the Universe’s Antimatter?
Differences between matter and antimatter could help explain why the cosmos mostly lacks the latter today, researchers say

How to Be a Data-Driven Parent
Economist Emily Oster explains how to make the best decisions for your particular child, using the scientific evidence at hand

Fertile Ground: The Long-Neglected Science of Female Reproductive Health
When the discussion of reproductive health is dominated by the political will to control it, gaps in medical research get overshadowed

Israeli Spacecraft Fails to Make First Private Lunar Landing
Private organization SpaceIL’s Beresheet lander crashes down on the moon following engine and communications problems

Looking for Life on Mars: Viking Experiment Team Member Reflects on Divisive Findings
Patricia Straat looks back on the Viking lander experiment that aimed to find microbes

The “Fantastic” Feeling of a Breakthrough: Q&A with Math Prize Winner Karen Uhlenbeck
The first female winner of the prestigious Abel Prize shares details of life as a mathematician

Neutron Stars: Nature’s Weirdest Form of Matter
The insides of neutron stars—the densest form of matter in the universe—have long been a mystery, but it is one that scientists are starting to crack

Erupting Black Hole Shows Intriguing "Light Echoes"
A huge flare from a black hole helps reveal how matter and energy are expelled

Redefining the Kilogram
Officials will vote to overhaul the SI system of measurements, basing units such as the kilogram not on physical objects but on fundamental constants

Halting Sexual Harassment
A leader of a major report on sexual misconduct explains how to make science accessible to everyone

DNA-Coded “Lunar Library” Aims to Preserve Civilization for Millennia
Mission co-founder explains how backing up data on synthetic DNA can protect humanity’s knowledge