The National Oceanic and Atmospheric Administration (NOAA) predicts a strong chance of geomagnetic activity tonight, October 13–14.
Amateur astronomy clubs, planetariums, science museums, and parks celebrate Astronomy Day twice a year.
This month is your last chance to catch Saturn in the evening sky. But Mars is still hanging around, and Venus is climbing higher each evening.
The fall equinox (spring equinox for the Southern Hemisphere) comes on September 22, 2016, at 4:02 p.m. Eastern Daylight Time (20:02 UT).
Skywatchers in the Eastern Hemisphere will see tonight's full moon skirt through Earth's dusky outer shadow.
Early evening features Mars and Saturn toward south, but keep an eye out for brilliant Venus climbing up from the west during twilight.
The Sun's second coverup of the year will be an annular solar eclipse whose path crosses south-central Africa and northern Madagascar on September 1st.
It's still a full year away, but next year's coast-to-coast solar eclipse is already a big deal with astronomers worldwide.
As twilight fades for the rest of August, follow two planetary groupings happening at dusk in different parts of the sky.
Many observers who had a dark, starry sky late last night (Aug. 11-12, 2016) were rewarded with an especially rich Perseid meteor shower. And it's probably not over yet.
Make a connection to a time when stars were used to track seasons and predict natural events by watching the heliacal rising of Sirius.
After the Moon sets on August 11–12, the Perseid meteor shower could be unusually rich.
An otherwise faint and distant periodic comet underwent a bright outburst at the end of last month. Now it's visible in amateur telescopes at nightfall.
Download or play Sky & Telescope's astronomy podcast, and you'll get a guided tour of the night sky. In early evening look for Mars and Saturn embedded in Scorpius toward south, and key an eye out for Perseid meteors.
The meteors are coming! Three annual meteor showers are already active and guaranteed to spark up your summer nights.
Now you see 'em, now you don't. Watch the Moon occult Neptune and nearby Lambda Aquarii on the same night.
Celebrate the June 20th solstice, when the Sun and the full Strawberry Moon combine their powers to illuminate both day and night.
Supernovae are popping up everywhere! Two stars flamed out millions of years ago and at least one is an easy catch right now in amateur telescopes.
Sky & Telescope's astronomy podcast takes you on a guided tour of the night sky. After the Sun sinks from view, enjoy watching Mars and Saturn near Scorpius in the southeast and Jupiter near Leo well up in the southwest.
It's showtime for the King of the Rings! Time to get your telescope out to see and share Saturn, which comes to opposition this week.
Planetary scientists are counting on amateur observations to enhance the results from NASA's forthcoming Juno mission.
The orbiting science laboratory begins a series of marathon passes this week that favor the northern hemisphere.
At last, a fine Mars apparition: on May 22nd the Red Planet reaches opposition, shining almost as bright as Jupiter, and the planet makes its closest approach to Earth on May 30th.
May 9th's transit of Mercury is now history. Countless amateurs — and professionals — watched as the innermost planet had its day in the Sun. It's sometimes the curse of being involved in astronomical outreach that I miss all the action during an important celestial event. For example, I never got to see Comet Shoemaker-Levy…
Join in Monday, May 9th, as tiny Mercury crosses the Sun's disk for the first time since 2006. S&T's exclusive video feeds and expert interviews will air throughout the 7½-hour event.