Watch an asteroid approach a star and block its light, all in a fraction of a second.
Mars remains visible in the southwest during and after twilight, with the crescent Moon passing it this week.
The dark ways of Algol the Demon Star, and what it can teach us about stellar evolution.
Some daily sky sights among the ever-changing Moon, planets, and stars. Friday, November 14 Keep an eye on little Mars in the southwest at dusk. It will keep hanging in there month after month through this winter, as constellations of the zodiac slide behind it. Last-quarter Moon (exact at 10:16 a.m. EST). The Moon...
There's more than one way to see the constellations. Here's a look through Native American eyes. Orion the Hunter is arguably one of the most recognizable constellations in the sky. Striding the celestial equator, he charges up from this eastern horizon around 9 o'clock in late November, club in one hand and shield in the...
Some daily sky sights among the ever-changing stars and planets. Friday, November 7 The Moon, just past full, rises in the east at dusk. Once it climbs high, look for orange Aldebaran to its lower left and the Pleiades to its upper left. Catch Mercury in Saturday's dawn, as shown here. Saturday, November 8...
Often ignored in off years, why not treat yourself to the Leonids this month, a shower famed for fireballs and smoke trails.
A mythic drama plays out in the stars above on November evenings. Taking center stage, almost directly overhead at nightfall, is Cassiopeia, the Queen.
Sky & Telescope's weekly celestial events calendar, with sky views, charts, and selected astronomy sights for your unaided eyes, binoculars, or a telescope.
While we may never see a planet orbiting a star other than the sun that doesn't mean we can't go there in a flight of fancy.
Some daily sky sights among the ever-changing stars and planets The monster sunspot continues in view; see "This Week's Planet Roundup" below. Friday, October 24 As the stars come out, Deneb is nearly straight overhead for skywatchers at mid-northern latitudes. Brighter Vega is west of the zenith. Altair is farther from the zenith toward...
Most of us are familiar with the Seven Sisters, but have you met their brothers? Learn how to find more Pleiades than first meet the eye.
A gigantic sunspot group, rotating into view on October 17th, has grown to nearly the size of Jupiter and could trigger potent solar storms in the days ahead.
Some daily sky sights among the ever-changing stars and planets Monster sunspot alert — see "This Week's Planet Roundup" below. Friday, October 17 Before dawn Saturday morning, Jupiter shines above the waning Moon, as shown at right. Although they look rather close together, Jupiter is 2,100 times farther in the background — it's at...
October's a perfect time to see the zodiacal light, a tapering tower of comet dust standing high in the eastern sky before dawn. Here's how to find it.
Some daily sky sights among the ever-changing stars, Moon, and planets.
Reports describing this morning's lunar eclipse are beginning to trickle in to our offices in Cambridge, Massachusetts.
You'll need to be up after midnight to watch the Moon plunge deep into Earth's shadow tomorrow morning — but it'll be worth it. Sometimes astronomical events occur in prime time — soon after it gets dark yet before bedtime. But that won't be the case tomorrow morning when, for the second time this year,...
Some daily celestial sights among the ever-changing stars and planets Friday, October 3 As evening twilight fades away, look very far to the lower left of the Moon for Fomalhaut, the Autumn Star, already climbing up from the southeast horizon. Saturday, October 4 The W pattern of Cassiopeia stands vertically (on its dimmer end)...
October is pleasant for nighttime observing because evenings are cool and come early. Use our downloadable stargazing podcast to find the month's highlights.
Lonely Fomalhaut turns out to have plenty of company. Learn how to find its two remarkably distant stellar companions.
Mars shines above Antares in the southwest at dusk this week.
Start your day with an eclipse of the full Moon! On the morning of October 8, 2014, a total lunar eclipse will be visible across most of North America.
Learn exactly how and when to expect the next display of the northern lights with a few easy-to-use online tools.
Arcturus is the bright star fairly high due west at nightfall. It's an orange giant 37 light-years away. Off to its right in the northwest is the Big Dipper, most of whose stars are about 80 light-years away.