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.
Spot Uranus and Neptune, and relive the original discoveries.
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.
Binoculars and our charts are all you need to spot these twin outer planets.
Virtually any telescope will show Jupiter's four Galilean satellites and their interesting interactions with the planet or its shadow.
Not so long ago, astronomers thought only a few dozen satellites orbited the planets of our solar system. Today the total count tops 170!
Viewing the solar system¹s largest planet can be more than fun even with a modest telescope, you can make observations of lasting scientific value.
Amateurs are observing this elusive planet more successfully than ever before; try spotting it yourself.
If you see a bright "star" not shown on your planisphere (star wheel), it's probably a planet. The planets always stay in or near the zodiacal constellations, which straddle the ecliptic (shown as a green line on Sky & Telescope's Star Wheel and a blue line on our Night Sky Star Wheel). For help...