** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. ** The inception of what we now ...

As the citizens of Padua, Italy, watched the Sun set on the evening of Jan. 7, 1610, none of them could have known that somewhere in their beautiful city, standing on a balcony high above them, a man ...

** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. ** British Galilean “optical” sights ...

From "How to Train Your Dragon" to the Holst of his generation — this composer's grand tribute to four of the solar system's greatest wonders is ready to be heard. When you purchase through links on ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. Dexter defines The Galilean Suite as tone poems, but while ...

Even in a backyard telescope, the four largest moons of Jupiter are big enough to be seen as little specks of light. And while humans have known about these “Galilean satellites” for centuries, there ...

We already know a decent amount about how planets form, but moon formation is another process entirely, and one we're not as familiar with. Scientists think they understand how the most important moon ...