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Synchronous fireflies light up these national parks
The synchronous fireflies are back! These lightning bugs flash in harmony in the Great Smoky Mountains and other nearby parks from mid-May to mid-June.
May 20, 2026
The Lyrid meteor shower in 2027 peaks April 22
The best time to watch the Lyrid meteor shower is before dawn on the mornings of April 22 and 23. You'll have a bright waning gibbous moon in the sky.
May 20, 2026
Constellations and signs: What’s the difference?
What is the difference between the signs of the zodiac and the constellations of the zodiac? Astronomer Guy Ottewell illustrates and discusses this difference.
May 20, 2026
Interstellar turbulence in the Milky Way distorts light
For the 1st time, astronomers have directly detected how interstellar turbulence distorts the light from distant objects in our galaxy.
May 19, 2026
Find the Keystone in Hercules, and the Hercules Cluster M13
Let the bright star Vega guide you to a famous star pattern in Hercules - called the Keystone - and then to the Hercules Cluster, aka M13.
May 19, 2026
The binturong is a strange mammal that smells like popcorn
The binturong is a strange mammal that smells like popcorn, lives high in the trees and quietly helps tropical forests grow.
May 18, 2026
Severe weather, tornadoes possible Sunday and Monday
Severe weather, tornadoes are possible across parts of the U.S. Sunday and Monday, May 17 and 18, 2026. Plus large hail, damaging wind gusts.
May 17, 2026
Which moon phase is best for stargazing? That depends.
Which moon phase is best for stargazing? Most astronomers would tell you that the best moon is no moon. But it depends on what you want to see.
May 17, 2026
Stardust in Antarctica shows Earth crossed a supernova cloud
Stardust in Antarctica reveals the presence of an element that is not naturally made on Earth. But it is created in supernovas. Read more about the evidence.
May 15, 2026
Apex of the sun: Look to Vega in May
Apex of the sun shows the direction our solar system moves through space, toward the bright star Vega in the May night sky.
May 15, 2026
