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Best twilight photos from our community
Enjoy twilight in some of the best photos shared by the EarthSky community. Have a great photo of your own to share? Send it to us!
August 27, 2023
Does rising methane signal a ‘great transition’ in climate?
Professor Euan Nisbet says the recent steep incline in rising methane levels could signal a termination event on Earth, when climate systems reorganize.
August 23, 2023
Astraphobia is a fear of thunder and lightning
If your heart starts to race when a thunderstorm comes near, and you want to hide from the thunder and lightning, you might have astraphobia.
August 22, 2023
A red rainbow happens when the sun is low
A red rainbow has a surreal beauty, but its explanation is fairly ordinary. It's created via the same physics that makes a sunset or sunrise looks red.
August 10, 2023
The largest freshwater wind farm in the world
Windpark Fryslân is the largest freshwater wind farm in the world and can generate enough power to run about 500,000 homes in the Netherlands.
August 9, 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
Geoengineering accidentally for decades? Looks like it
Have we been geoengineering accidentally for decades? Hank Green thinks so. Now he points to sulfur dioxide as a possible road to (temporary) cooling.
August 4, 2023
Iridescent contrails? Rainbow contrails? Something else?
They look like iridescent contrails. But, are they? We asked Les Cowley, an atmospheric optics expert, who gave a different opinion.
August 2, 2023
Can we predict earthquakes now? No, but there’s news
It hasn't been possible before now to predict earthquakes. But 2 French researchers now claim to have discovered a way to do it.
August 2, 2023
Parachuting beavers created a fire-resistant wetland
NASA satellite imagery showed that a creek where beavers built dams was lusher, greener, and more fire-resistant than neighboring areas without beaver dams.
July 30, 2023
