This pink border lining Earth's shadow opposite the just-set or about-to-rise Sun is often seen but rarely recognized.
Nobody else may care about blogs that I wrote three years ago — but I do, because I like to hyperlink to older blogs when I write new ones. So here, in case anybody's interested, is a list of all Stargazing blogs from 2007 through 2010: 2010 Oct 26, 2010 Guest Blog: In Defence...
Eighty years ago, Clyde Tombaugh discovered Pluto while comparing two photographs taken a few weeks earlier. How does his discovery look in light of our current knowledge?
Venus and Jupiter have a close but difficult conjunction shortly after sunset on Tuesday, Feb. 16. And after the sky gets dark, you have an unusual chance to see an asteroid with hardly any effort at all.
The author ponders the dilemmas of providing star charts for observing articles in Sky & Telescope.
Here are some handy reference works for people who love to observe double stars and want to expand their horizons.
Double stars are fun, quick, and easy to observe.
It's great when an astronomical event far exceeds your expectations.
What sized telescope is equivalent to a pair of 70-mm binoculars? To some extent, this is a question without an answer — like comparing apples to oranges. But for some purposes, 70-mm binoculars can actually do better than a 100-mm scope. In other words, the human brain sometimes gets better results combining the light...
Messier 33, which rides high in the sky on late-autmun evenings, can be the most rewarding or frustrating of all galaxies, depending on your conditions and your mindset.
Cutting down trees to get a better view of the night sky can be a surprisingly emotional issue.
It's hard to find a better way to spend an hour or two outside on a clear, moonless night than viewing the targets from the latest Deep-Sky Wonders column through a telescope.
The view from New Hampshire's Mount Guyot: Venus blazes above the glow of the impending sunrise.
According to the Light Pollution Atlas, there's a fourfold variation in light pollution per capita among metropolitan areas in the U.S. and Canada.
The Grand Canyon Star Party is one of the largest public star parties in the United States.
The amount of light pollution generated per person varies greatly from one country to another.
Depending how you present the data, light pollution in the U.S. may appear anywhere from quite severe to fairly modest.
Instrumental measurements suggest that the color zones from the World Atlas of Light Pollution — perhaps best known through its incorporation in the Clear Sky Chart — don't tell the whole story.
Some thoughts about, and an index to, a year of blog-writing.
How valuable is visual astronomy in the electronic age?
I'm beginning to take Comet Holmes for granted.
It's tricky deciding when to post an observing story on the Web.
It's easy to make honest mistakes when viewing astronomical objects that are faint or small.
It may be dimming, but Comet Holmes is still unbelievably big and bright.
While traveling in India, the author missed having a telescope for completely unexpected reasons.