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EarthSky Voices
The colors of Earendel, farthest known star
The Webb space telescope has looked at the colors of Earendel, the most distant known star. The new data shows that the star likely has a redder companion star.
August 17, 2023
Solar Cycle 25 is more active and powerful than predicted
So far this solar cycle has been more powerful and surprising than predicted. It has been very active so far before the predicted peak in 2025.
August 16, 2023
What is wet-bulb temperature? And how hot is too hot?
The wet-bulb temperature is a measure of the deadly combined effects of temperature and humidity. See an interactive map here.
August 8, 2023
Why people believe UFOs are extraterrestrial: A sociologist responds
Sociologist Barry Markovsky unpacks the reasons why UFOs (UAPs) are so popular and why people "want to believe." Read more here.
July 23, 2023
Algae bloom covers half of Florida’s largest lake
An algae bloom in Lake Okeechobee - Florida's largest freshwater lake - covered more than half the lake in June and July. Learn more about the algae here.
July 19, 2023
Astronomers see time moving in slow motion in early universe
Astronomers have observed quasars "ticking slowly" in the early universe. Seeing time moving in slow motion is another confirmation of special relativity.
July 9, 2023
99% of the world’s population in sunlight July 8 … and other dates
Fact-checkers at timeanddate.com discovered 99% of the world's population experiences some sunlight at 11:15 UTC on July 8 ... along with many other dates!
July 4, 2023
1st Saturn image from Webb highlights glowing rings
Webb has taken its 1st Saturn image! This infrared view shows Saturn's rings shining bright in a golden light. You can also spot some of Saturn's moons.
July 1, 2023
What is a derecho? A destructive, bow-shaped storm
A derecho tore across the Midwest on June 29, 2023. These dangerous storms pack strong winds and race over large areas of land. Learn more about derechos here.
June 29, 2023
Found! Long-sought gravitational wave background
Found at last! For the 1st time, researchers using pulsar timing arrays have found evidence for the elusive gravitational wave background.
June 29, 2023
