Since 1986 I have had an affiliation with the Hayden Planetarium in New York. My "official" title there is "Associate and Guest Lecturer." Indeed, through all of these years I given scores of ...

It’s twinkle, twinkle with a whole new twist. Gaze up at Sirius, the brightest star in the night sky, and it seems to change colour as its light gets refracted through our atmosphere. This unique ...

Step outside this week around 9 p.m. local time and look about one-third of the way up from the southern horizon, and your eyes will be met by a dazzling celestial solitaire: Sirius, the Dog Star. In ...

Watch Sirius and you’ll soon discover that it doesn’t just seem to twinkle wildly; it fires off colorful sparks that often prompt calls to observatories and emergency personnel. Credit: Creators.com ...

To an untrained eye, the night sky appears very much a mystery. The multitude of stars that join our planets in populating an evening sky are fairly anonymous. The brightest star, and the nearest to ...

The so-called "Dog Days" of summer in the Northern Hemisphere officially came to an end this week, when the Sirius, the bright Dog Star, returned the night sky. Everyone talks about "Dog Days" but few ...

Don’t be surprised if you find yourself picking up the phone this week to report a strange “UFO” in the southeastern sky not long after dark. It will appear as a brilliant light that flickers and ...