Catch an Exciting Spica Occultation on July 13th
Don't miss Spica's dramatic disappearance at the Moon's dark limb. We also check in on the status of current bright comets.
July Podcast: Spotlight on Spica
Grab your curiosity, and come along on this month’s Sky Tour. This month offers a chance to watch a dramatic coverup of the bright star Spica by the first-quarter Moon. You can also glimpse Mercury just after sunset — and Saturn very late in the evening.
This Week's Sky at a Glance, June 28 – July 7
It takes hardly more than a glance up these evenings to check for the anticipated eruption of T Coronae Borealis, the Blaze Star.
Is the "Blaze Star" About to Blow? You May Be the First to Know
T Coronae Borealis is a nova star that's due to suddenly — and briefly — brighten. Here's how to see this once-in-a-lifetime event.
Southern Stargazing with Jonathan Nally
Centaurus Constellation: Glimpse the Greatest Globular
The Centaurus constellation holds some of the best southern targets, including the Omega Centauri globular cluster and the Centaurus A galaxy.
This Week's Sky at a Glance, June 21 – 30
The two brightest stars of summer balance across the zenith. Arcturus and Vega represent the two commonest spectral types, and colors, of all the naked-eye stars in the sky.
See the Real Planet Parade
Maximize your planetary pleasure and get re-acquainted with Earth's siblings during the June 29th dawn planet parade.
This Week's Sky at a Glance, June 14 – 23
On solstice week the brightening Moon moves across the evening sky from Spica to Scorpius. On Monday, it helps you find a piece of Centaurus from as far north as southernmost Canada!
Meet Shaula: The Scorpion’s Triple-Pronged Stinger
Meet Shaula, the bright star on the Scorpion's tail. It's a challenge for northern observers, but easy to find if it clears the horizon!
This Week's Sky at a Glance, June 7 – 16
The waxing Moon reenters the sky as an evening crescent. Pollux and Castor keep it company. The Big Dipper hangs straight down. And can you still catch wintry Capella? The colder your latitude the better your chance.
Comet 13P/Olbers Juices Up June Skies
June brings heat and bugs but also a moderately bright, early-evening comet that returns every 69 years.
June Podcast: Spotting the Serpent Charmer
Listen to this tour of the stars and planets that you’ll see overhead during June. Learn how to spot three planets before dawn, and to track down a snake-handler in the early summer sky. Grab your curiosity, and come along on this month’s Sky Tour.
This Week's Sky at a Glance, May 31 – June 9
Arcturus and Vega highlight the evening, The Big Dipper quickly pivots. And sorry, tell your friends and family who ask that no "dazzling Parade of Planets" is blazing across the sky. Who makes this stuff up??
This Week's Sky at a Glance, May 24 – June 2
The Big Dipper twists around fast near the zenith, Arcturus almost claims the zenith, the Coma Star Cluster not far away can't quite hide, and T Cor Bor simmers ominously dim.
Why Did Galileo Get Such a Puny Crater?
Galileo was one of the first people to study the Moon through a telescope. You'd think he'd get more than 10-mile-wide crater for his efforts. But of course, there's more to the story.
This Week's Sky at a Glance, May 17 – 26
This week the Moon occults Beta Virginis, then Antares. The last star of the Summer Triangle finally rises before bedtime. On the other side of the sky, the Arch of Spring sinks low.
Severe Geogmagnetic Storm Has Arrived! Auroral Blast Expected Friday Night
A severe geomagnetic storm has just hit Earth — which means we could see auroras tonight! Here's what you'll need to know.
This Week's Sky at a Glance, May 10 – 19
The waxing Moon this week travels eastward from the horns of Taurus past the heads of Gemini, the Beehive in Cancer, then the forefoot of Leo on its way to occulting Beta Virginis.
This Week's Sky at a Glance, May 3 – 12
This week in the moonless dark, the Summer Triangle appears over the eastern treetops star by star. Leo walks down toward the west. And the Sombrero Galaxy positions itself ideally on the south meridian for your telescope.
Ready the Hot Cocoa and Recliner — Here Comes the Eta Aquariid Meteor Shower!
You might be tempted to sleep through this annual shower but then you'd miss seeing some of the fastest meteors around. Not to mention their parent is the most famous comet of all.
