See the year’s fastest sunsets and sunrises around equinoxes

The year's fastest sunsets and sunrises happen around the equinoxes, and the slowest sunsets and sunrises happen around the solstices.

Zodiacal light on spring evenings

The zodiacal light is an eerie light extending up from the horizon. During the months around the March equinox is a good time to see it. How to see it, here.

What’s a constellation? What’s an asterism?

Constellations and asterisms are patterns of stars. Some asterisms consist of stars from different constellations, and some are part of 1 constellation.

Is Sirius the most luminous star in the sky?

Sirius is the brightest star in Earth's sky because of how close it is to us. It's so bright you might see glints of different colors flashing from it.

Total lunar eclipse March 2-3: Last one for 3 years!

Overnight on March 2-3, 2026, there will be a total lunar eclipse of the full Blood Moon. Where will it be visible? See animations, charts and details here.

Lunar eclipse: Tips for watching and enjoying

A total lunar eclipse is coming up overnight on March 2-3, 2026. Here are some tips for watching and enjoying the total lunar eclipse.

A total lunar eclipse looks red. Why?

Coming up ... the total lunar eclipse of March 2-3, 2026. At maximum eclipse, the moon will look red. But why? Earth's atmosphere is the key.

What is orbital resonance? A dance between heavenly bodies

What is orbital resonance? It's a precise dance between heavenly bodies when their orbits line up, causing them to have specific synchronicities.

Latitude and the stars: Your location is key

Where you live determines what you see in the sky. Find charts here showing how the sky dome changes by latitude and the stars that are then visible in the sky.

Annular solar eclipse today! 1st solar eclipse of the year

On February 17, 2026, an annular solar eclipse was visible from remote parts of Antarctica and the Southern Ocean. Details here.