SUNSET: 
Retrograde Rock "Niku" Defies Orbital Trend
The discovery of trans-Neptunian object 2011 KT19 in a strange orbit deepens a key mystery in the outer solar system.
Explore the Night with Bob King
Palling Around With Palomar Globular Clusters
The intriguing Palomar globular clusters will challenge observers with modest to large telescopes, while providing a satisfying ramble around the galactic halo.
Explore the Night with Bob King
A Real Scorcher! — Sirius At Heliacal Rising
Make a connection to a time when stars were used to track seasons and predict natural events by watching the heliacal rising of Sirius.
Astronomy in Space with David Dickinson
Possible Replacement for Hitomi
JAXA and NASA are looking at the possibility of replacing the dead Hitomi X-ray observatory, with a potential launch around 2020.
Comet 29P/Schwassmann-Wachmann 1 Blows Its Top . . . Again!
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.
How to Photograph a Meteor Shower: Capturing the Perseids
Learn how to photograph a meteor shower with these step-by-step instructions, as well as advice for the advanced imager.
Delta Aquariids Kick Off Summer Meteor Showers
The meteors are coming! Three annual meteor showers are already active and guaranteed to spark up your summer nights.
Astronomy in Space with David Dickinson
Mars 2020 Rover Construction Moves Ahead
The Mars 2020 rover reached a third crucial milestone this past week on the path to the launch pad.
See Two Tricky Occultations — Neptune and Lambda (λ) Aqr
Now you see 'em, now you don't. Watch the Moon occult Neptune and nearby Lambda Aquarii on the same night.
Explore the Night with Bob King
Paddle the Milky Way's Dark River
Take an imaginary journey in a boat down the Milky Way's Great Rift, exploring rich star clouds and dark nebulae along the way.
Eclipse 2017: Spotlight on Glendo, Wyoming
A small town with a population of 205 will be the destination for Sky & Telescope's Wyoming solar-eclipse tour in 2017.
Explore the Night with Bob King
Aurora at Your Fingertips
A survey of free services and apps that let you keep tabs on space weather so you can anticipate the next great aurora.
NASA's Juno Probe Reaches Jupiter
After a 5-year-long journey, NASA's latest emissary to the largest planet in the solar system has arrived at its destination.
Astrophotography: Tips & Techniques
Picture Perfect: Getting Started in Astrophotography
Few amateurs have looked through a telescope and not imagined what it would be like to take a photo of the target in the eyepiece.
Explore the Night with Bob King
Midnight Meridian Morsels
Late June offers a grab bag of clusters and nebulae "lined up" at the midnight hour. Time your southern deep-sky viewing with meridian passage and you'll be a happy camper.
Cosmic Relief with David Grinspoon
The Golden Spike of Tranquility Base
A modest proposal: the golden spike that marked the beginning of the Anthropocene was the first lunar landing in Mare Tranquilitatis.
Newfound Object 2016 HO3 Shares Earth's Orbit
A recently discovered asteroid plays leapfrog with Earth as they both orbit around the Sun.
Hunting White Dwarfs, the Night's Stellar Peewees
Take a trip down the rabbit hole to the weird and weighty world of planet-sized white dwarf stars.
Astronomy in Space with David Dickinson
FRIPON: A New All-Sky Meteor Network
An innovative new meteor detection network will engage researchers and the public in a search for space rocks.
Explore the Night with Bob King
Solstice Brings Late Nights, Bright Sights
Celebrate the June 20th solstice, when the Sun and the full Strawberry Moon combine their powers to illuminate both day and night.
