Charting the Andromeda Galaxy
The Hubble Space Telescope has turned its ultraviolet, visible-light, and near-infrared eyes to the queen of galaxies, M31, capturing the biggest and sharpest image yet of our neighbor.
Stars’ Spins Show Their Ages
Astronomers have expanded their ability to date stars using the stars’ own spins.
BOSS: A Ruler to Measure Them All
Amidst the release of a treasure trove of astronomical data, scientists announce the most precise “standard ruler” yet for cosmological distances.
Tour January’s Sky: The Pleiades
Our monthly podcast offers the key highlights for stargazing in January: where to find bright stars and planets – and a special look at the Pleiades star cluster.
How to See Comet Lovejoy
Comet Lovejoy has entered its best two weeks for skywatchers, glowing at 4th magnitude in a dark early-evening sky.
A Visit to the Sky’s North Pole
Unlike the terrestrial North Pole, the heavenly version is easily accessible any clear night of the year. We explore curiosities within one degree of the celestial north pole and take a journey back in time.
This Week’s Sky at a Glance, January 9 – 17
Comet Lovejoy is at its best this week and next. Meanwhile, Venus and Mercury come within 1° from each other in the evening twilight.
How to Choose, Use, and Equip a Telescope
In a quartet of high-quality videos, Sky & Telescope editors offer newcomers solid, objective tips on how to buy, use, equip, and care for new telescopes.