Like a flotilla of PT boats accompanying two giant aircraft carriers, dozens of dwarf galaxies surround and interact with the Milky Way and Andromeda galaxies. Now, astronomers are finding our Local Group forms a microcosm of the universe at large.
All that we see is not all there is. In fact, what’s visible to us makes up only 0.5% of the total mass of the universe. Is that absurd? Find out in this intriguing story about dark matter and dark energy.
Considered retirement homes for old stars, globular clusters have long been overlooked as objects of serious study. But their time to shine has come – these stellar communities display remarkable diversity and harbor some of the universe’s most intriguing characters.
One of the largest galaxies in our Local Group is the Pinwheel Galaxy, also known as M33. We now know what lies within its vast spirals – objects waiting for amateurs to observe.
In a good year, observers are lucky to catch the Ringed Planet gliding in front of one moderately bright star. But this month presents two golden opportunities: Watch a couple of 8th-magnitude stars flicker and disappear before your very eyes.
Whether you are interested in astrophotography as an activity or you just enjoy looking at great celestial pictures, this pair of California amateurs has something for you.
If you are looking for that perfect holiday gift either for yourself or your loved one, the search is over. ASTRONOMY reviews twenty-five tried-and-true telescopes that will delight newcomers and inspire seasoned observers.
This month in Astronomy
Bob Berman’s strange universe
Glenn Chaple’s observing basics
The sky this month