Year’s fastest sunsets happen around equinoxes

The year's fastest sunsets are at the equinoxes, and the slowest are at the solstices. We're talking about how long it takes the sun to sink below the horizon.

Visible planets and night sky guide for March

Visible planets in March 2022. We're 21 days from eclipse day on April 8! Tonight , the moon visits Castor and Pollux, the Gemini "twins."

Color weirdness before April’s total solar eclipse

We're counting down to the April 8, 2024, total solar eclipse, which will cross North America. Colors look eerie just before the moon covers the sun. Why?

March equinox 2024: All you need to know

The 2024 March equinox falls March 20 at 3:06 UTC. So many parts of the world will see the equinox arrive on March 19. Learn about an equinox here.

Supermoons galore in 2024!

What is a supermoon? In 2024, there are 5 new supermoons in a row from January to May, and 4 full supermoons in a row from August to November.

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 one constellation.

Meteor shower guide 2024: Up next the April Lyrids

We're in a meteor shower drought until the April Lyrids. They'll be best overnight on April 21-22. Your 2024 meteor shower guide here.

Mars in 2024: Back in the morning sky

Mars is ascending higher in the morning sky, and Venus is sinking sunward. Mars will be visible - but dim - before dawn for most of 2024. Then, by the year's end, it'll suddenly become noticeable!

Binoculars for stargazing: Our top 6 tips here

Want to know how to use binoculars for stargazing? Follow our top 6 tips to get the most out of viewing the night sky with a little optical aid.

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.

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