Expert Voices Paul Sutter

If scientists want astronomy to thrive throughout the 21st century, we need a new approach: to view new observatories through a lens of public benefit.

Global satellite-based high-speed internet access will come at a cost, polluting the skies and contaminating astronomical observations.

James Clerk Maxwell is the scientist responsible for explaining the forces behind the radio in your car, the magnets on your fridge, the heat of a warm summer day and the charge on a battery.

A new theory suggests dark matter may have come from quantum bags that got squished together in the early universe.

What are the chances that a primordial black hole forged in the earliest moments of the universe will come wandering toward Earth?

Certain weird gravity conditions would make it possible to travel through a wormhole and back.

Asteroids are packed with gold and other valuable resources. And the best way to harvest those metals may be to bring space rocks to Earth.

If we ever want to take pictures of an Earth-like exoplanet, we need to think bigger than the biggest telescopes on Earth.

On Aug. 4, 2008, the Fermi Gamma-ray Space Telescope began full science operations, scanning the entire sky through the highest-energy form of light.

The growing problem of space junk poses a risk to future space missions, but the solution isn't going to be easy.

A pair of astronomers have proposed two new strategies for preventing possible asteroid impacts.

If you were to place a galaxy behind the black hole and then look off to the side, you'd see a distorted image of the galaxy. Here's why.

You may have heard about the "cosmology crisis:" Different methods of measuring the age of the universe are giving different results, and cosmologists have no idea why.

The earliest and most momentous epoch in the history of the universe released a flood of gravitational waves, tiny ripples in the fabric of space-time.

A wild variety of star systems exist in the nearby regions of the Milky Way, and astronomers are eager to know where they might find an "Earth 2.0."

Astrophysicists say our universe might be shaped like a three-dimensional donut, meaning you could point a spaceship in one direction and eventually return to where you started.

Despite numerous attempts, astronomers have not yet confirmed the detection of an exomoon, a moon orbiting a planet around a distant star.