You may have heard of the phrase "dog days." But what does that mean? Here's how mid-summer came to be called the dog days.

From ancient stargazing to modern pet safety — here’s how this phrase got its name and why it still matters today.

The “Dog Days” of summer ended earlier this month and now you can find Sirius, the Dog Star (because it’s in the constellation Canis Major, “The Great Dog”), in the morning sky.

The brightest star in the night sky is Sirius, also known as the "Dog Star." Here's when, where and how to see it—and glimpse its rainbow of colors.

We’re in the dog days of summer, at least where I live – over 90 degrees and humid. According to ancient Greeks, it's thanks to Sirius, the Dog Star.

Sirius, one of the nearest stars to our solar system, will be briefly occulted by a three mile-wide asteroid called 4388 Jurgen, but only for those inside a narrow path through Mexico, US, and Canada.