Perhaps most recognizable as a Hawaiian hello, Aloha has a far deeper meaning: "love." The word is used in many contexts to ...

For nine years, a spacecraft known as the Juno orbiter has divided its time between observing the gas giant of Jupiter and studying its moons, including Io. And on its third flyby of the celestial ...

Five of the brightest planets will be visible to the naked eye. With help, you may even spot Uranus and Neptune.