Use our interactive observing tool to say which of the planet's four largest moons is which.
Calculate when the Great Red Spot will cross Jupiter's central meridian — that's the best time to see the famous storm through your telescope.
Find information on observing Jupiter during its 2016 - 2017 apparition, including information on its moons and Great Red Spot transit predictions.
Take the observing challenge: Find as many as five of the brightest moons of Uranus in a large backyard telescope using our interactive observing tool.
Triton, Neptune's largest moon, is a tricky find. Our Triton Tracker observing tool can help users of moderate to large telescopes spot this distant moon.
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.
Following an occultation of Rho Leonis by the Moon, watch Venus and Uranus pair up in a weekend conjunction just 10° from Comet ER61 PanSTARRS.
Flash! A comet or asteroid fragment whacked Jupiter on May 26th. It's the sixth time that observers on Earth have witnessed an impact on the giant planet.
With our eyes often glued to the bright classical planets, Uranus is easy to overlook. Now well-placed for viewing at a convenient hour, why not pay this pale blue dot a visit the next clear night?
Now you see 'em, now you don't. Watch the Moon occult Neptune and nearby Lambda Aquarii on the same night.
Spot Uranus and Neptune, and relive the original discoveries.
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.
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.
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 see Saturn and all it has to offer! Saturn is entering the early evening sky this spring just as Jupiter begins its exit in the west. Here's a quick guide to…
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 the…
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.
Viewing Saturn is an old favorite for every telescope user. Here's a guide to seeing all that you can see on the ringed planet.