"Since plants are emerging earlier in the year, they tend to be older and past their peak nutritional value by the time the hungry caribou arrive to eat them." - Jeffrey Kerby
NASA's Cassini spacecraft has detected propylene, a chemical used to make food-storage containers, car bumpers and other consumer products, on Saturn's moon Titan.
The first scoop of soil analyzed in the belly of the Curiosity rover on Mars reveals that fine materials on the surface of the planet contain several percent water by weight.
"Most people are puzzled by the existence of singing mice, but in reality many rodents produce complex vocalizations, including mice, rats and even pet hamsters." - Bret Pasch
Newly discovered pulsar switches between emitting X-rays and emitting radio waves. It's the first direct evidence of one kind of pulsar turning into another.
Scientists have identified a new kind of eel-like electric fish, the Akawaio penak, in a remote region of Northern Guyana that is known for its biodiversity.
"Certainly we would love it to be a couple of magnitudes brighter right now, but it's doing just fine. I'd say it's still on course to become a very eye-catching object." - Karl Battams, Naval Research Lab in Washington, D.C.
The EarthSky team has a blast bringing you daily updates on your cosmos and world. We love your photos and welcome your news tips. Earth, Space, Sun, Human, Tonight. Since 1994.