SUNSET: 
Watch this Weekend: The Geminid Meteors
The Geminids, a meteor shower sparked by dust and debris shed from a small asteroid, peaks this weekend.
Warm Up with December's Geminid Meteors
The annual Geminid meteor shower, one of the best shooting-star displays each year, returns to our skies late this week. Despite interference from moonlight, plenty of bright meteors should still shine through.
Tour December's Sky: Orion Rising
Our monthly podcast offers the key highlights for stargazing in December: where to find bright stars and planets — and how to spot the Geminid meteor shower.
Watch Asteroid Juno Occult a Star
Watch an asteroid approach a star and block its light, all in a fraction of a second.
See November's Speedy Leonids
Often ignored in off years, why not treat yourself to the Leonids this month, a shower famed for fireballs and smoke trails.
Tour November's Sky: Cassiopeia
A mythic drama plays out in the stars above on November evenings. Taking center stage, almost directly overhead at nightfall, is Cassiopeia, the Queen.
Where, When, and How to See Mercury
Mercury moves fast around the Sun and changes location in the sky quickly. But you can spot it before sunrise in early November. Here's the info you'll need!
Partial Solar Eclipse Roundup
Readers share their experiences of the October 23, 2014 partial solar eclipse.
See a Partial Solar Eclipse — Today!
Find everything you need to enjoy today's partial solar eclipse — where to go, what you'll see, weather forecasts, and just in case, an online backup plan.
Jupiter-size Sunspot Group Now in View
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.
Watch the Partial Solar Eclipse Online
Find out where you can watch the partial solar eclipse taking place on October 23, 2014.
Dark Skies for 2014's Orionid Meteor Shower
Just about everyone has heard of Halley's Comet, and each year in mid-October we get to witness a "shooting stars" spawned by this celebrated object.
Partial Solar Eclipse, October 23, 2014
Viewers in western North American are positioned perfectly to view the partial solar eclipse on the afternoon of October 23, 2104.
Watch a Sunset with the ISS Astronauts
Watch the International Space Station as it passes into the shadow of the Earth, and learn what other features to keep an eye out for (such as the "water dump").
Lunar Eclipse Roundup
Reports describing this morning's lunar eclipse are beginning to trickle in to our offices in Cambridge, Massachusetts.
Night Owls Prepare for October 8th's Lunar Eclipse
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…
Tour October's Sky: Pegasus Flies High!
October is pleasant for nighttime observing because evenings are cool and come early. Use our downloadable stargazing podcast to find the month's highlights.
Wake Up to a Total Lunar Eclipse on October 8, 2014
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.
How to Never Miss an Aurora
Learn exactly how and when to expect the next display of the northern lights with a few easy-to-use online tools.
The 2014 Autumnal Equinox Arrives
Astronomically speaking, the fall season comes to the Northern Hemisphere on Tuesday, September 23, 2014 at 02:29 UTC (Monday, September 22 at 10:29 p.m. EDT). At that moment, the Sun passes over the Earth’s equator heading south; this event is called the autumnal equinox.
