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.
With this week's full Moon, the dazzling crater Tycho will be in full regalia. Time to catch some rays!
After a long drought, a bright planet emerges in the western sky. Welcome back, Venus!
Orion's Belt is a magnetic sight on February nights. Take the bait and revel in a bounty of double and multiple stars, nebulae, and more.
The launch of the Humanity Star has some fuming, others smiling, at the prospect of seeing a bright, new satellite. What do you think?
An unusual dawn total lunar eclipse presents special challenges and great photo opportunities. Here's what you need to know to make the most of it.
Mira, one of the easiest-to-observe pulsating variable stars, reaches peak brightness this month. Don't be shy, come look her in the eye.
We look ahead to see what fuzzy visitors, new and returning, will brighten the nights ahead. One and possibly two naked-eye comets are on the way.
On Wednesday, January 31, 2018, the first total lunar eclipse in more than two years graces the skies above North America. The Western United States, including Alaska and Hawaiʻi, has the best view.
Two total lunar eclipses occur this year, the first since late 2015, in January and July. Meanwhile, three solar eclipses take place in 2018 — all of them only partial cover-ups.
More than a dozen times each year, we experience a pulse of "shooting stars" from an annual meteor shower. Sky & Telescope predicts that the two best meteor showers in 2018 will be the Perseids in mid-August and the Geminids in mid-December.
Beginning in 1645, obsessed observers drew maps of the Moon's face in ever-greater detail. These observers made it into the author's Lunar Hall of Fame.
A slender Moon is an beautiful and inspiring sight. December and January offer several opportunities to see these exceptional crescents.
The parent asteroid of next month's Geminid meteor shower, 3200 Phaethon, is about to make a historically close flyby. Get ready to watch it race across the sky.
This November, point your binoculars towards the Silver Coin Galaxy — NGC 253, also known as the Sculptor Galaxy, is one of the brightest galaxies to spot.
These three important, prototypical variable stars will hold your attention for nights on end: Delta Cephei, Mira, and Algol.
With exoplanet Ross 128b in the news, we pay a visit to the star that sustains this potentially habitable exoplanet.
Pisces, that sprawling constellation of faint stars easy to ignore, holds a treasure trove of double stars for small telescopes.
The Moon occults two 1st-magnitude stars for much of North America just six days apart. The first event happens mostly in early-evening darkness, the second in broad daylight — an extra challenge for the adventurous.
Using binoculars, find these four clusters that will fit comfortably in the same field of view — observe part of the structure of the galaxy made visible.
The joys of observing variable stars are predictably wonderful. Learn about these inconstant stars which are consistently delightful.
An extraordinary encounter with the stars: the most peacefully (yet still stirringly) wondrous is the sight of a clear, dark sky filled with stars.
Some lunar impacts have characteristics that make them neither "simple" nor "complex." Think of them as the “young adults” of the Moon’s crater population.
R Aquarii may look like a normal pulsing red giant — but it has a lot more going on around it. Its next episode of weirdness may begin soon...
Be sure to set the alarm so you don't miss the squeaky-tight conjunction of Venus and Mars Thursday morning. They'll stay close through the weekend.