The beautiful planetary parade continues through the end of the month, with special guest Mercury joining the pack soon.

Cloud Weight It might seem surprising, but the average cumulus cloud, those cotton-like clouds you see on fair weather days, ...

Lenticular Clouds Lenticular clouds, with their distinctive lens shape, often hover over mountain ranges like alien ...

I pick out North America’s celestial highlights for the week ahead (which also applies to northern hemisphere mid-northern ...

February stargazing is fantastic for many reasons, but this year there’s a one-two-three punch of bright planets adding to ...

The night sky tonight and on any clear night offers an ... They are indeed related – born of the same primordial gas cloud. To the unaided eye, only six of the stars are usually apparent ...

there’ll be plenty to see in the night sky–cloud cover permitting. Here are some of this month’s highlights. As we discussed last month, late January and early February will provide a stage ...

These are noctilucent (night-shining) clouds. “Even though the sun has ... making them seem to almost glow in the sky,” wrote Alex Innanen, a York University atmospheric scientist, in the ...

The area near clouds is often classified as ‘clear sky’, but a new study demonstrates the potential biases of misclassifying ...