How far back in time can we see? Earendel is the farthest star we've seen. The cosmic microwave background reveals the universe's first light. Can we see more?
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.
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.
Astronomers have observed quasars "ticking slowly" in the early universe. Seeing time moving in slow motion is another confirmation of special relativity.
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!
Members of the EarthSky community - including scientists, as well as science and nature writers from across the globe - weigh in on what's important to them.