Halloween, derived from Samhain, a festival of the ancient Celts and Druids, is a cross-quarter day – midway between the autumn equinox and winter solstice.
A computer simulation suggests that low-mass stars might be a good place to look for Earth-sized exoplanets, in their stars’ habitable zones.
Image via NASA/ ESA/ G. Bacon, STScI.
“Even one of these gigantic glacier avalanches is very unusual. Two within close geographical and temporal vicinity is, to our best knowledge, unprecedented.”
Observations begin tonight with the Green Bank radio telescope. Astronomers – seeking evidence of an extraterrestrial civilization – will hold a live chat today.
Learning to pull strings for food is often used to test the intelligence of apes and birds. Turns out, bees can learn it too, and pass the skill on to other bees.
Image via trasroid/Flickr
Sure, most of the moon’s craters were made billions of years ago. But – even now – the moon is still being hit by a surprising number of meteoroids.
Temporal ratio image formed from two LROC Narrow Angle Camera images (after image divided by the before image) revealing a new 12 meter (~40 foot) diameter impact crater (Latitude: 36.536°N; Longitude: 12.379°E) formed between 25 October 2012 and 21 April 2013, scene is 1300 meters (~4200 feet) wide. New crater and its continuous ejecta are seen as the small bright area in the center, dark areas are the result of material blasted out of the crater to distances much further than previously thought. Image via NASA.
The North and South Taurid meteor showers are going on simultaneously now. They’re considered minor, but produce many fireballs, or bright meteors.
| Jeff Dai in Tibet captured this Taurid fireball on November 10, 2015. He wrote: "The Taurid fireball make a beautiful reflections on the Yamdrok Lake."
As the Cassini mission to Saturn prepares for its grand finale, scientists sound nostalgic and thrilled about data on Titan’s changing seasons.
This true color image captured by NASA'S Cassini spacecraft before a distant flyby of Saturn's moon Titan on June 27, 2012, shows a south polar vortex, or a mass of swirling gas around the pole in the atmosphere of the moon.
A waning crescent moon is sometimes called an old moon. It’s seen in the east before dawn.
Greg Diesel-Walck captured the waning moon on August 29, too. He wrote: "This morning's moon at sunrise in Moyock NC. Very difficult to capture the fading moon in the brilliance of color but this is not a filtered image right off the camera."