Let Mars be your guide to no fewer than 15 diverse and delightful double stars that pepper its path through Scorpius and Libra this opposition season.
With the Moon finally put to bed and Comet 252P still bright, there's no better time than now to see it. Nearby Mars and Saturn only sweeten the deal.
Jove begins a new apparition with a redder Red Spot, pirouetting moons, and ever-changing cloudscapes.
This week and early next will be your last chance to see five planets — six if you count Earth — at dawn.
It’s been a fantastic year for Pluto, and it’s only going to get more so. What better time to make your first (or second!) attempt at spotting the dwarf planet? Read on for a few tips to help you locate this dim object in the summer sky.
This article gives directions for finding Uranus and Neptune from June 2015 through March 2016.
Spot Uranus and Neptune, and relive the original discoveries.
Fooled by shadow play into thinking lunar mountains were pointy pinnacles? Learn why we often see them that way.
Your first view of Saturn with a telescope can introduce you to the riches of stargazing — and now is the perfect time to observe it. Saturn is entering the early evening sky this spring just as Jupiter begins its exit in the west. Here's a quick guide to spotting the ringed planet by...
Astronomers don't know why Jupiter's iconic Great Red Spot has been gradually shrinking since the 1800s — or why the downsizing has accelerated during the past two years. Update: On May 15th, NASA released newly taken images of the Great Red Spot (at bottom below) to show its declining size since 1995. Thanks to...
Uranus and Neptune are easy to find with the aid of the charts in this article.
The King of Planets reached opposition in the first half of January but it's still big and bright, a captivating sight no matter how you look at it.
Saturn is an old favorite for every telescope user. Here's a guide to seeing all that you can see on the ringed planet.
Spectacular Saturn is a perennial favorite of telescope users everywhere. Click here to find printable data on the positions of Saturn's rings and planets.
Now you can calculate the dates and times (local and Universal Times) when the center of the Great Red Spot should cross Jupiter's central meridian, the imaginary line down the center of the planet's disk from pole to pole.
Click here to find the positions of Jupiter's moons and the Great Red Spot.
The "King of Planets," which will dominate the evening sky from late 2011 through early 2012, is a captivating sight no matter how you look at it.
The Galilean-satellite events published in Sky & Telescope's May 2008 issue are incorrect. Here's the correct listing.
As the first images are released from Messenger's flyby of the innermost planet, previous ground-based observations are proving to be surprisingly accurate.
Mercury is a rewarding challenge for planetary astrophotographers, as this amazing image by Massachusetts amateur John Boudreau demonstrates.
To compare what you see on Mars with a map, you need to know which side of the planet you're looking at. Our handy Mars Profiler tells you that and more, for any date and time.