Fifty years ago, U.S. scientists launched a satellite that dramatically changed how we see the world.
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.
Scientists who study exoplanets explain how the James Webb Space Telescope will study exoplanet atmospheres.
We honor the heroes of Apollo 11 and all those who made their accomplishment possible, yet many still deride astronauts in the U.S. private space industry.
One argument in favor of space exploration highlights benefits that help study, monitor and address serious concerns on Earth, like climate change and food production.
For particle physicists, this was the end of a decades-long and hugely difficult journey and the beginning of a new era of experimental physics.
China is unlikely to claim control over the moon despite concerns of NASA chief Bill Nelson. Here is why.
The buzz among professional astronomers has been electric since members of the Webb team shared tantalizing test images. And the real images are even better than anyone could have hoped for.
Observations across a vast range of scales are much better explained in an alternative theory of gravity requiring no invisible matter.
As Australia's space program begins to take off, parabolic flights like these will be in high demand.
By studying how flat Earthers talk about their beliefs, we can learn how they make their arguments engaging to their audience, and in turn, learn what makes disinformation spread online.
We should be intrigued, but not too excited (yet). Any interesting signal has to go through a lot of tests to check whether it truly carries the signature of extraterrestrial technology.
Researchers have found a new way to detect some of the most cataclysmic mergers in the universe before they happen.
The Gaia star-mapping mission gives us brand new information about star formation and moons around asteroids, as well as secrets about the Milky Way's origins and possible future.
According Einstein's Theory of Relativity, the speed of light operates as a universal speed limit on anything with mass.
"Comet," "star" and "planet" are category names that immediately tell you something important about what they describe.