The sun is a roiling, boiling ball of plasma, constantly churning and turning itself inside out.
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.
Pearl Jam's new record, 'Gigaton,' moves listeners beyond Earthly bounds to reflect on our changing planet.
As far as cosmologists can tell, the mysterious force behind the accelerated expansion of the universe, a force that we call dark energy, remains constant. But it may not have done so in the past.
All four outer planets in our solar system sport at least a few rings, but so far, we haven't observed any such features around exoplanets. That's confusing.
String theory is a purported theory of everything that physicists hope will one day explain … everything.
Life for the 19th-century astronomer was kind of monotonous, 200 years after Galileo's revolutionary work with the telescope.
Sometimes the forming star swallows up a huge amount of matter, resulting in a burst of activities in the massive star.
It was a big moment for our cosmos when the first stars awoke, but it's an elusive one for scientists.
As with any major human exploration, there will be a number of obstacles to overcome when we send people to Mars.
The world of the teensy-tiny, the quantum realm, could have a favorite flavor. Here's why that's a big deal.
Alien life is out there, but our current theories seem to be steering us away from it, says this scientist.