Featured in National Geographic and Nature, Canadian amateur astronomer Christian Sasse explains how he created his unique star trails, by superimposing images.
A beautiful spatial view of our solar system from Guy Ottewell, showing the planets’ paths along their orbits in approximately mid-May, 2017, with sightlines to them from the Earth.
They were the brightest objects nearly all night Sunday night, as seen from around the world. Here are a few photos from the EarthSky community. Thanks to all who submitted!
It's coming closer today than any asteroid this large since 2004. It came into view of small telescopes a few hours ago. Early radar observations indicate it's bigger than we thought.
Tau Boötis was the first star, other than our sun, ever seen to undergo a magnetic field reversal. This post also includes 2 great videos about our sun's magnetic reversals.
While watching Jupiter and the moon around April 9-11, don't forget Venus! It passed between us and the sun on March 25 and now blazes in the east before dawn.