Globally, nights are becoming ever brighter.
SPACE.com invites experts in space exploration, science & technology to provide insightful commentary and informed perspective on news, current events, innovations, big ideas and ongoing research. Expert Voices includes Op-Ed analysis and opinion as well as interesting observations from the field and space exploration efforts around the world.
The growing problem of space junk poses a risk to future space missions, but the solution isn't going to be easy.
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.
Theories that attempt to resolve the so-called black hole information paradox predict that black holes are much more complicated than general relativity suggests.
After NASA decommissions the ISS, China's Tiangong will probably be the only functioning space station — until NASA launches its Lunar Gateway.
The continuing research with exoplanets involves trying to identify their atmospheric composition, specifically to answer the question of whether life could exist there.
As the billionaire space race heats up between Richard Branson and Jeff Bezos, it's easy to get the wrong message.
Mars is known for its thin atmosphere, where CO2 dominates and provides most of the atmospheric mass and pressure.
If some UAP turn out to be extraterrestrial technology, they could be dropping sensors for a subsequent craft to tune into. What if ‘Oumuamua is such a craft?
It will be built on a modular design, similar to the International Space Station operated by the United States, Russia, Japan, Canada and the European Space Agency.