July 1-4: Dark skies. The night sky is filled with wonders, from meteor showers to the Milky Way. Yet we're missing out on much of it because of the light we produce on our own. We'll talk about some dark-sky wonders, plus efforts to cleanse the sky of stray light.

July 5-11: "Grabby" galaxy. Our home galaxy, the Milky Way, has long fingers -- the invisible fingers of gravity. It uses them to grab and pull in other galaxies, incorporating their stars into its own body.

July 12-18: The weather. The weather is probably the number one topic for idle chit-chat, and we'll join the chat this week, with the weather of planets, stars, and even space itself.

July 19-25: Dark matter. Most of the mass of the universe is invisible. We know it's there only because its gravity pulls on the visible matter around it. Join us for dark matter, from its discovery to the search for an explanation.

July 26-31: A powerful swan. Cygnus, the swan, soars gracefully through the Milky Way on summer evenings. The constellation is home to one of the mightiest stars in the galaxy, plus a giant nursery for new stars.