Equatorial plasma bubbles and their effect on air travel

Equatorial plasma bubbles are pockets of low density in the Earth's ionosphere in regions around the equator. They pose risks to aviation. Read more.

When you wish upon a star, is it already dead?

Some cynics say that when you wish upon a star, that star is already dead. But don't listen to them! The stars you can see, and your dreams, are perfectly safe.

Wild weather: Best satellite imagery of 2024

Enjoy our 12 favorite pieces of satellite imagery from the past year, from historic hurricanes to a total solar eclipse. Thank you, GOES satellites!

Personal solstices from the EarthSky community

Some people like to mark the solstice with a special sunset view, or marking of shadows, or party! Personal solstices from the EarthSky community, here.

Cyclone Chido devastated the island of Mayotte

Cyclone Chido devastated the French island of Mayotte on December 14, 2024, before hitting Mozambique in Africa. See images here.

Happy Friday the 13th: It’s the 2nd of 2 in 2024

When a year with 366 days starts on a Monday, it's inevitable Friday the 13th will occur twice. In 2024, Friday the 13th comes in September and December.

A meeting of 2 ancient human species in fossil footprints

Scientists have discovered ancient human footprints of 2 different species, showing that they coexisted on the African shore. See the tracks here.

Thanksgiving turkey: White meat or dark meat?

Thanksgiving turkey raises an important question: Dark or white meat? Amaze your companions on why different cuts of turkey have different characteristics.

MOND and more. Does the universe need a rethink?

MOND theory: There's increasing evidence that astronomical theories don’t match observations. Is it time to rethink our story of how our universe came to be?

Carl Sagan and his scientific legacy on his 90th birthday

Carl Sagan would have turned 90 on November 9, 2024. Here's a look at his accomplishments and the contributions he made to the world of astronomy and science.