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Astronomers Tiptoe Closer to Confirming First Exomoon
Space

Astronomers Tiptoe Closer to Confirming First Exomoon

Signals seen by the Hubble Space Telescope suggest a Neptune-size moon may orbit a gas-giant planet around a star some 8,000 light-years from Earth

By Lee Billings
The Quest to Conquer Earth's Space Junk Problem
Space

The Quest to Conquer Earth's Space Junk Problem

Zombie satellites, rocket shards and collision debris are creating major traffic risks in orbits around the planet. Researchers are working to reduce the threats posed by more than 20,000 objects in space

By Alexandra Witze and Nature magazine
The Human Eye Could Help Test Quantum Mechanics
Physics

The Human Eye Could Help Test Quantum Mechanics

Experiments to confirm we can see single photons offer new ways to probe our understanding of quantum reality

By Anil Ananthaswamy
Beyond the Shadow of a Doubt, Water Ice Exists on the Moon
Space

Beyond the Shadow of a Doubt, Water Ice Exists on the Moon

Deposited in perpetually dark craters around the poles, the ice could be a boon for future crewed lunar outposts

By Leonard David

Departments

  • From the Editor

    A Universe of Possibilities

  • News

    Search for Alien Life Should Be a Fundamental Part of NASA, New Report Urges

  • India’s “Vyomanauts” Seek to Join the Elite Club of Spacefaring Nations by 2022

  • Reimagining of Schrödinger's Cat Breaks Quantum Mechanics—and Stumps Physicists

  • "Optical Tweezers" and Tools Used for Laser Eye Surgery Snag Physics Nobel

  • Sky Report

    Celestial Movement

  • Opinion

    What Does Quantum Theory Actually Tell Us about Reality?

  • Will Pluto Be the Last Habitable World?

  • Einstein's Famous "God Letter" Is Up for Auction

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