Dark nebulae are clouds of gas and dust in space. They block the light of stars shining behind them. Often, they're locations where new stars are forming.
The Portugal fireball of May 18, 2024, was captured from the ground on video and from satellites in space. The fireball was most likely a comet fragment.
Killer whales take 1 breath between dives. New data from tags attached to the animals and observations from unmanned aerial vehicle drones have verified it.
NASA has released some images of Europa, the ocean moon of Jupiter. They provide new clues about the moon's ice shell and other intriguing surface features.
Scientists announced the discovery of the first nitroplast, a nitrogen-fixing organelle. It's just the 4th example in history of primary endosymbiosis.
Iguanas are formidable, armored reptiles that can change color and detach their tails. Plus, they have a third eye! All you need to know about iguanas, here.
David Wallace of Mississippi State University talks to Deborah Byrd about solar flares and the impact a big storm from the sun would have on Earth today.