Cosmology How is it that galaxies merge and collide but the universe is expanding and everything is moving away from everything else?
Science Do Io’s volcanic eruptions create the electromagnetic torus between the moon and Jupiter? Could Io deorbit into Jupiter in the next several million years because of energy lost in these interactions?
Stars Do stars experience the same phenomena as our Sun, such as sunspots, prominences, solar wind, and flares?
Science, Solar System SwRI researchers offer explanation for the differences between Ganymede and Callisto
Science Ask Astro web extra: Why is the fourth known planet in an extrasolar system labeled with an “e”? Shouldn’t that be the fifth known planet? Or is the star always “a”?
Science National Science Foundation selects National Solar Observatory to build world’s largest solar telescope
