SA Space & Physics Vol 4 Issue 2

Space & Physics

Volume 4, Issue 2

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Features

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?

Astronomer Avi Loeb Says Aliens Have Visited, and He's Not Kidding

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

Telescopes on Far Side of the Moon Could Illuminate the Cosmic Dark Ages

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

Departments

From the Editor
Onward, Intrepid Rover
Opinion
Quantum Mechanics, Free Will and the Game of Life
Physicists Need to Be More Careful with How They Name Things
Did a Supermassive Black Hole Influence the Evolution of Life on Earth?
Until Recently, People Accepted the 'Fact' of Aliens in the Solar System
News
Galaxy-Size Gravitational-Wave Detector Hints at Exotic Physics
Quantum Network Is Step Toward Ultrasecure Internet
Is It a Planet? Astronomers Spy Promising Potential World around Alpha Centauri
Mystery of Spinning Atomic Fragments Solved at Last
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