Space & PhysicsJanuary 15, 2021
Telescopes on Far Side of the Moon Could Illuminate the Cosmic Dark Ages
Instruments deployed on missions to the lunar far side might give us an unprecedented view of the early universe
Volume 4, Issue 2
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Features
AstrophysicsJanuary 27, 2021
Giant Galaxies from the Universe’s Childhood Challenge Cosmic Origin Stories
Large galaxies are thought to form gradually, across billions of years of cosmic time. So why do astronomers keep finding them in the youthful early universe?
Space & PhysicsFebruary 1, 2021
Astronomer Avi Loeb Says Aliens Have Visited, and He’s Not Kidding
In conversation, the Harvard University professor explains his shocking hypothesis—and calls out what he sees as a crisis in science
Departments
News
Quantum Network Is Step Toward Ultrasecure Internet
Mystery of Spinning Atomic Fragments Solved at Last
Galaxy-Size Gravitational-Wave Detector Hints at Exotic Physics
Is It a Planet? Astronomers Spy Promising Potential World around Alpha Centauri
The First 100 Days on Mars: How NASA's Perseverance Rover Will Begin Its Mission
Perseverance Has Landed! Mars Rover Begins a New Era of Exploration
From the Editor
Onward, Intrepid Rover
Opinion