A small group of amateurs teamed up to measure the parallax, and thus the distance, to a near-Earth asteroid as it passed by our planet.
Whether you’re just getting started in astronomy or simply looking to do some casual sky-watching, our monthly Sky Tour astronomy podcast provides an informative and entertaining 12-minute guided tour of the nighttime sky. Download the March episode to find and learn about Sirius, the brightest star in the night sky.
As the winter Milky Way rides high, open star clusters near and far, and from compact to sparse, await your binoculars or telescope, At dawn catch the Venus-Mars pair, and try for the closer Mercury-Saturn pair lower down.
With the Moon gone from the evening sky, trace out Monoceros the Unicorn walking behind Orion. Spot the famous binocular star clusters at his eye and horn-tip, and don't miss M41 under Sirius. Meanwhile, the waning Moon, passes Venus, Mars and Mercury at dawn.
This is the part of the month when the evening Moon is at its telescopic best in many skywatchers' opinions, as the terminator sweeps across the middle of the Moon's disk. And in February, the Moon at these phases rides especially high. Jupiter sinks low in evening twilight, and a triangle of planets displays in early dawn.
The Winter Triangle, the Goat Star and the Kids, Orion nearing his peak standing on the giant Hare over the difficult Dove... there's plenty to occupy you in the evening even as most of the planets have migrated over to dawn.
The University of Colorado, Boulder, has unveiled a 1:10 billion scale-model solar system with an interactive sound experience.
In the hills of northern California, a teenager discovered a comet's tail — and a lifelong passion for stargazing.