Sun pillar at Vancouver Island

Sun pillars happen when sunlight reflects from plate-like ice crystals, drifting through Earth's atmosphere with a horizontal orientation, gently rocking from side to side as they fall.

The most inspirational space video, ever

Worried that our human species is making a mess of things? Inspiration-less? Carl Sagan wants to tell you something.

360 video: Tour a Mars robot test lab

If your browser or smart phone is set up to view it, this 360 video will let you virtually explore a Mars simulation facility at NASA's Jet Propulsion Laboratory, where engineers are practicing for an upcoming Mars lander mission.

Nature likes to make bow waves

Boats moving through water make bow waves. Objects in space, including Earth, make them, too. Even the moon's shadow - penetrating Earth's atmosphere during a total solar eclipse - creates moving bow waves.

Check out the Big and Little Dippers

Nice! We published some stories about the Big and Little Dippers and received back some photos. Love it when that happens. Thank you!

Colorado serenade

You'll enjoy this one. Gorgeous views of day and night skies over the Colorado River in the Grand Canyon National Park in Arizona.

Best photos of moon’s sweep past morning planets

The waning moon has now swept past all 3 bright planets in the predawn sky. Photos here from the EarthSky community.

The science of fake news gets a boost

Scientists call for studies of fake news. Plus a word about so-called "chemtrails."

Measuring universe expansion reveals mystery

Is something unpredicted going on in the depths of space?

Low rainbow near Joshua Tree

The height of a rainbow depends on the height of the sun. The higher the sun, the lower the rainbow.