Help Shape the Future of Space Exploration

Join The Planetary Society Now  arrow.png

Join our eNewsletter for updates & action alerts

    Please leave this field empty
Blogs

Headshot of Emily Lakdawalla

Planetary Society Weekly Hangout: The Ice Giants, with Heidi Hammel

Posted by Emily Lakdawalla

11-04-2013 14:00 CDT

Topics: Hubble Space Telescope, podcasts and videos, Voyager 1 and 2, Neptune's rings, Neptune, James Webb Space Telescope, Neptune's moons, Uranus' rings, Uranus, Uranus' moons

My guest this was Planetary Society Board vice president Heidi Hammel. We discussed two planets near and dear to our hearts, Neptune and Uranus. What's new on these icy worlds since Voyager 2 passed by, and what are the prospects for their future exploration?

Neptune from Hubble, August 28, 2010

NASA / STScI / Kathy Rages / Gordan Ugarkovic

Neptune from Hubble, August 28, 2010
The new Wide Field Camera 3 on Hubble was employed to photograph Neptune in near-natural color on August 28, 2010, when the planet was near its opposition. The version on the right has enhanced contrast, revealing a dark ring of clouds around the south pole. Triton would be visible to Hubble if it were in the frame, but it was not in the camera field of view at the time of the observation.
 
See other posts from April 2013

 

Or read more blog entries about: Hubble Space Telescope, podcasts and videos, Voyager 1 and 2, Neptune's rings, Neptune, James Webb Space Telescope, Neptune's moons, Uranus' rings, Uranus, Uranus' moons

Comments:

Bob Ware: 04/10/2013 12:18 CDT

Hello Everyone, We probably don't have any idea but... Would the fluid dynamics at Uranus & Neptune behave the same way as at Jupiter? (Andrew Ingersoll had a great article in Scientific American on Jovian fluid dynamics, post Voyager/Jupiter). Sorry I forgot when it was published. Thanks. Have a pleasant day.

Bjorn Jonsson: 04/10/2013 08:19 CDT

Interesting planets that deserve more attention. Two things I'd be interested in knowing more about: (1) The amount of activity visible on Uranus has apparently steadily increased with time. A comparison with the Voyager 2 images is especially striking (even though it's inaccurate since Voyager 2 didn't have near infrared imaging capability). Is this apparent increase a 100% real feature or at least partially due to the groundbased instruments getting better as time passes? (2) Regarding future exploration, wouldn't Uranus and/or Neptune flyby missions make sense? As far as I know mainly orbiters have been studied but due to the budgetary environment there must be decades until an orbiter could reach one of these planets (or even decades until an orbiter could be launched). Flyby missions would be much cheaper/quicker and would return less data but a flyby mission is better than no mission, also such a mission could return far more/better data than Voyager 2 (modern instruments, large onboard data storage etc.).

Bob Ware: 04/11/2013 11:12 CDT

Here is an unpopular idea (honestly): why not use a "cheap flyby" class S/C ("Herschel"), to swing a couple of orbits around the planet and then plunge in and let the science package transmit real time to failure. Low cost, short duration end of design life mission type) S/C 2 would fly to Neptune and repeat. If some instruments based upon VGR findings out there are onboard, then a fling outbound with a gravity assist from each planets location could be applied. Uranus would be almost perpendicular to the Neptune fling out thus 2 different planes of departure.

Bob Ware: 04/11/2013 05:35 CDT

Thank you Emily & Heidi for a great webcast. Uranus is my favorite planet. I am intrigued by Neptune also. I've been "Mars-up'd", as in tied, way to long that I did not realize 7 & 8 are now known as ice giants! Whoa!! ...been Mars bound way to long! I need to resume looking out the window!! LOL!!

Bob Ware: 04/11/2013 05:49 CDT

Based upon the webcast and not being a fluid dynamics person, I'm going to hazard a guess and say the fluid dynamics would not be the same in a gas giant as an ice giant.

Leave a Comment:

You must be logged in to submit a comment. Log in now.
Facebook Twitter Email RSS AddThis

Blog Search

JOIN THE
PLANETARY SOCIETY

Our Curiosity Knows No Bounds!

Become a member of The Planetary Society and together we will create the future of space exploration.

Join Us

Featured Images

South Georgia island

ATV-5 and a waning moon
Moscow at night
Squished supermoon
More Images

Featured Video

View Larger »

Fly to an Asteroid!

Travel to Bennu on the OSIRIS-REx spacecraft!

Send your name

Join the New Millennium Committee

Let’s invent the future together!

Become a Member

Connect With Us

Facebook! Twitter! Google+ and more…
Continue the conversation with our online community!