Open clusters present a mystery. Some fall apart in a few hundred million years, others hang around for billions. Join me as we visit both the youngest and oldest star clusters in the Milky Way.
A brand new supernova in NGC 6946 is bright enough to see in modest-sized telescopes. Here's how to find it.
At 2.5 million light-years away, you might think it's impossible to see individual stars in the Andromeda Galaxy. Let its largest star cloud, NGC 206, show you the way.
Among globular clusters, the immense Omega Centauri is widely regarded as the most impressive in the sky. Its deep southern location makes this object challenging to spot — but it can be done, as Italian observer Giuseppe Pappa explains.
The Triangulum Galaxy shows more detail through backyard telescopes than any other galaxies except the Magellanic Clouds and our own home, the Milky Way. But M33's treasures don't just jump out and grab your eye. To see them, you need dark skies, patience . . . and this guide from the December 2004 issue of Sky & Telescope.
Trained eyes and clear, dark skies can open up a new dimension in deep-sky observing.