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Oppositions, conjunctions, seasons, and ring plane crossings of the giant planets

Posted by Emily Lakdawalla on 2016/07/07 08:01 CDT | 4 comments

When are the solstices and equinoxes on the giant planets, and when are they best positioned for view from Earth? I ask these questions a lot as I write about Earth photos of giant planets, and I finally decided to gather the answers to those questions in a single post.

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Three bright planets: Portraits from the Pyrenees

Posted by Emily Lakdawalla on 2016/05/26 02:40 CDT | 1 comments

It's a great time to go outdoors and look at planets. I have three glorious planetary portraits to share today, sent to me by amateur astronomer Jean-Luc Dauvergne.

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New work with 35-year-old data: Voyagers at Ganymede and Saturn

Posted by Emily Lakdawalla on 2016/05/25 04:44 CDT | 8 comments

The Voyager data set is a gift to Earth that keeps on giving. This week, I've seen three great new images processed from this old data set.

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Watch the entire Cassini mission image catalog as a movie

Posted by Emily Lakdawalla on 2015/11/20 09:43 CST | 2 comments

If you were to download the entire catalog of photos taken at Saturn to date by Cassini and then animate them like a flipbook, how long would it take to watch them all pass by? The Wall Street Journal's Visual Correspondent Jon Keegan has your answer: nearly four hours.

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Take My Free Online College Introduction to Planetary Science and Astronomy CSUDH Class

Posted by Bruce Betts on 2015/02/04 05:00 CST | 2 comments

Our own Dr. Bruce Betts is once again teaching his Introduction to Planetary Science and Astronomy college course online. Come join him.

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Flawed Beauties

Posted by Bill Dunford on 2015/02/02 05:03 CST | 1 comments

More examples of imperfect--but tantalizing--images from deep space.

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Riding With Cassini Through 2014

Posted by Bill Dunford on 2014/12/31 06:13 CST | 1 comments

Video: see some of the sights Cassini saw this year.

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A (Difficult) Day in the Solar System

Posted by Bill Dunford on 2014/10/30 10:05 CDT | 13 comments

After a bad day on the launch pad, some perspective.

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Cassini's awesomeness fully funded through mission's dramatic end in 2017

Posted by Emily Lakdawalla on 2014/09/03 07:54 CDT | 9 comments

Last year, rumors swirled that NASA may be so pinched for dollars that the agency might end the Cassini mission early. Today, Cassini received the welcome news that it has formally been funded through the planned end of its extended-extended mission in 2017. A huge congratulations to the Cassini mission!

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A close look at Saturn's closest moons

Posted by Emily Lakdawalla on 2014/06/26 08:13 CDT | 1 comments

A new composite image of the eight named moons that orbit closest to Saturn, and a list of all the best Cassini observations of these moons.

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Of Rings and Resolution

Posted by Bill Dunford on 2014/06/23 09:36 CDT | 3 comments

Seeing Saturn before and after Cassini.

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Another Day in the Solar System

Posted by Bill Dunford on 2014/05/12 09:56 CDT | 1 comments

One day, five worlds.

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Intro Astronomy Class 9: Titan, Uranus and Neptune Systems

Posted by Bruce Betts on 2014/04/11 02:31 CDT

Examine Saturn's moon Titan and explore the Uranian and Neptunian systems in this video of class 9 of Bruce Betts' Introduction to Planetary Science and Astronomy class.

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Intro Astronomy 2014. Class 8: Icy Galilean Satellites, Saturn System

Posted by Bruce Betts on 2014/04/11 02:28 CDT

Explore the icy moons of the Jupiter System and tour the Saturnian system in this video of class 8 of Bruce Betts' Introduction to Planetary Science and Astronomy class.

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Dancing With Saturn

Posted by Bill Dunford on 2014/03/24 09:30 CDT | 5 comments

Cassini images in motion.

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Intro Astronomy Class 1: Tour of the Solar System

Posted by Bruce Betts on 2014/02/11 05:53 CST | 1 comments

Take a tour of the Solar System in the video of class 1 of Bruce Betts' Introduction to Planetary Science and Astronomy class.

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Take My Free Online College Introduction to Planetary Science and Astronomy CSUDH Class

Posted by Bruce Betts on 2014/02/05 05:02 CST | 9 comments

Our own Dr. Bruce Betts is once again teaching his Introduction to Planetary Science and Astronomy college course online. Come join him.

Read More »

Through a Glass, Darkly

Posted by Bill Dunford on 2014/01/13 12:46 CST | 5 comments

When sent from deep space, even imperfect images can inform and amaze.

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Polar vortices across the solar system

Posted by Emily Lakdawalla on 2014/01/09 11:49 CST | 2 comments

Earth's polar vortex has been in the American news all week. But we're not the only planet that has one; basically every world that has an atmosphere has a polar vortex. Here are lots of pretty pictures and animations of polar vortices.

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Cosmos with Cosmos Episode 6: Travellers' Tales
Voyager is the ultimate expression of our desire to explore

Posted by Casey Dreier on 2013/11/25 03:56 CST | 12 comments

The Voyager mission may be the ultimate expression of our desire to explore, but why does that will exist in the first place? Why is it unique to humans?

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