NASA file

Neil Armstrong's shadow appears in an image that was taken during the Apollo 11 lunar mission in 1969 for a 360-degree panorama. Click on the image to play with an audio-enhanced panorama from PhotoJPL.com.

The death of first moonwalker Neil Armstrong and the success of NASA's Curiosity rover have reignited interest in the idea of taking a spin on the moon and Mars, at least virtually. It may be a decade or two before astronauts once again walk on the moon, or take the next giant leap to the Red Planet. In the meantime, 360-degree interactive panoramas give you a sense of what those walks will be like. Here's a quick roundup of the coolest 360-degree views:

Walking on the moon
Armstrong, who passed away last weekend at the age of 82, was the first photographer to produce a 360-degree panorama on the surface of another celestial body. The pictures that make up the all-around mosaic show crewmate Buzz Aldrin working near the lunar module, the glare of the sun in the opposite direction, and Armstrong's shadow on the lunar surface.

Every Apollo mission that made it to the surface since then has featured at least one all-around picture. In Armstrong's honor, PhotoJPL.com has produced a zoomable, spinnable 360-degree display of the Apollo 11 scene. But to get the full Apollo lineup — including the must-see batch from Apollo 17, the last lunar mission — you'll want to check out Panoramas.dk or Moonpans.com. 

The Lunar and Planetary Institute offers an atlas of the source images, which were taken with the Hasselblad 70mm camera used on all of the Apollo missions. If you want to find Cat's Paw Hills in Armstrong's panorama, or Hadley Delta in the Apollo 15 panorama made by Jim Irwin, this is the place.

JPL-Caltech / NASA / MSSS / Hans Nyberg

A panoramic picture from Mars shows the shadow of the Curiosity rover in the foreground as well as Mount Sharp on the horizon. Gaps in this picture have been filled out by Hans Nyberg for a pan-and-zoom panorama. Click on the image to give the interactive version a spin.

Roving on Mars
NASA's Spirit and Opportunity rovers have sent back years' worth of 360-degree vistas from the places they've visited, and Curiosity has already added some fantastic views to the panoramic photo album. You'll find more than 30 all-around views at the website for the Pancam imaging system used on Spirit and Opportunity, plus scores of partial panoramas and mosaics. NASA's website for the Mars Exploration Rovers also rounds up lots of panoramic views, including 3-D versions.

Pan-and-zoom versions of the Spirit and Opportunity all-arounds can be found at Marspans.com and Panoramas.dk. The Mars Panoramas website offers the rover all-arounds as well as 360-degree views from the Mars Pathfinder lander (1997) and the Phoenix Mars Lander (2008).

When it comes to Curiosity, Hans Nyberg of Panoramas.dk has done up a great 360-degree view of the rover's landing site in Gale Crater. This version of the picture has been adjusted by NASA so that the lighting reflects earthly conditions rather than the dull red of filtered Martian sunlight. In addition, Nyberg has filled in the parts of the Martian sky that were missing in the data sent back by Curiosity.

Nyberg also has a black-and-white panorama of the Martian terrain as seen on Aug. 22, after the six-wheeled Curiosity made its first move. A similar view can be seen on the PhotoJPL website. Be sure to check out the rover's tracks in the foreground. 

Arounder Mars offers panoramas from Curiosity as well as Spirit, Opportunity and Pathfinder, although its sepia-toned view of Curiosity's surroundings doesn't include the latest pictures of 3-mile-high Mount Sharp (also known as 5-kilometer-high Aeolis Mons). PhotoJPL also has a Sharp-less panorama of the Curiosity landing site.

Over at the 360Cities website, Andrew Bodrov has updated his popular black-and-white Mars Curiosity panorama to include Mount Sharp — and he's added some real stunners, including this full-color, 360-degree view. The Wall Street Journal has an interactive graphic that serves up three 360s: the black-and-white and color views of the landing site, as well as a post-drive panorama in black and white only.

All these pan-and-zoom views are based on the imagery provided by NASA, of course, and there are several places you can go to get the full spread without the clickability. Here are just a few of my favorite haunts. Got more to add? Feel free to pass them along in your comments below.

Correction for 9:30 p.m. Sept. 4: An earlier version of this posting incorrectly stated that Nyberg enhanced the lighting in the color 360-degree panorama. Instead, he selected a rendering of the scene that was enhanced by NASA to look more Earthlike. This webpage from the Jet Propulsion Laboratory's Photojournal demonstrates the difference between the raw version and the enhanced version. Also, for a time, I improperly embedded Nyberg's panorama rather than providing an outward link.

More ways to satisfy your curiosity about Curiosity:

• NASA's Curiosity image gallery
• UnmannedSpaceflight.com: MSL forum
• DB Prods: Curiosity and more from Mars
• Planetary Society: Curiosity
• The Gale Gazette
• Martian Vistas

360-degree panoramic views from NBCNews.com:

• October 2011: Occupy Wall Street in New York's Zuccotti Park
• May 2012: Annular solar eclipse witnessed from Lassen Peak
• July 2012: At home in a retired Boeing 727 jet

Alan Boyle is NBCNews.com's science editor. Connect with the Cosmic Log community by "liking" the log's Facebook page, following @b0yle on Twitter and adding the Cosmic Log page to your Google+ presence. To keep up with Cosmic Log as well as NBCNews.com's other stories about science and space, sign up for the Tech & Science newsletter, delivered to your email in-box every weekday. You can also check out "The Case for Pluto," my book about the controversial dwarf planet and the search for new worlds.

Clickable 360-degree panoramas are cropping up that let you take a spin around the Curiosity rover's surroundings on Mars, but there's something missing from every picture: the massive, 3-mile-high (5-kilometer-high) mountain that's staring Curiosity in its face. It's like taking a virtual 360-degree tour of the Grand Canyon, but without the Grand Canyon.

The true-to-life all-around views from Curiosity aren't yet complete, but picture-builders can fill in the details. One popular panorama on the 360Cities website, created by photographer Andrew Bodrov, is great for giving you a sense that you're right there on Mars. But don't take it at face value. The picture is not just missing the mountain: The rover's 3.6-foot-tall (1.1-meter-tall) mast, on which Curiosity's best cameras are mounted, has been airbrushed out of the picture. A Photoshopped sun has been stuck into a fake sky. Gaps in the imagery have been smoothed over, and the whole picture has been colorized.

"Color photos of Mars look different, but NASA still has not published enough source materials to assemble a complete panorama," Talking Points Memo quoted Bodrov as saying. "I am just waiting for new photos."

So is the Curiosity team. They're waiting in particular for the pictures of the mountain, known as Aeolis Mons or Mount Sharp. So far, the peak has been seen from the ground only in comparatively low-resolution, black-and-white pictures from the rover's hazard avoidance cameras. The rover hasn't yet pointed its color Mastcam or its black-and-white Navcam imager above the level of Mount Sharp's foothills.

NASA / JPL-Caltech

A processed picture from a hazard avoidance camera on NASA's Curiosity rover shows the rover's shadow in the foreground, and the mountain known as Mount Sharp or Aeolis Mons in the background.

"We are having the Mastcam team look at targeting Mount Sharp directly, and that's a high priority for the team," mission manager Mike Watkins told me today. "We talked about it at this morning's planning meeting, and we hope to see that in a few days."

Deputy project scientist Ashwin Vasavada explained that the shooting schedule for the first panoramic pictures was pre-programmed for just after landing, with no awareness of how the rover would be oriented. Now that the rover is reprogrammed and ready for new observations, it won't be long before Mount Sharp's peak is incorporated into the panoramas. 

"By the way, we are dying to see that image also," Watkins said. "We talk about it all the time around the control room."

In the meantime, you can spin through partial panoramas and other goodies at these websites:

• The Wall Street Journal's interactive provides the color view (from the Mastcam system) as well as a more complete black-and-white view (from Curiosity's navigation cameras).
• NASA's QTVR interactive can fill the screen with Mastcam imagery — don't mind the black patches. The space agency's Curiosity website also provides the 360-degree flat mosaic used in the interactive, as well as the Navcam's flat view.
• Panoramas.DK features a 360-degree interactive showing the Opportunity rover's surroundings at Greeley Haven, almost halfway around the planet from Curiosity. You'll find a pile of archived panoramas from Opportunity as well as the dear departed Spirit and Pathfinder rovers at the Arounder Mars website.
• The Martian Vistas website presents James Canvin's flat renderings of partial panoramas, including 3-D versions.

More about Mars:

• Mars orbiter gets a long look at Curiosity rover
• Reprogrammed rover getting ready to roll
• Obama tells rover team: Let me know if you see Martians
• Search for life to shape future Mars missions
• Mars rover getting reprogrammed for science
• Why the rover has such a dinky camera and computer
• How to build your own Mars rover with Lego blocks
• The Puff on Mars: Photo mystery solved!
• Panorama reveals a colorful Mars
• NBC video: Panorama featured on 'Nightly News'
• Curiosity reveals a Martian Mojave
• Tour the Martian Mojave in 3-D
• Flying saucer spotted over Mars
• First 3-D pictures sent by Curiosity
• Orbital photo spots rover and its trash
• Curiosity sends color snapshot from Mars
• Rover video looks down on Mars during landing
• Mars orbiter spots rover in midair
• NASA's Mohawk Guy marvels at his fame
• Curiosity rover scores touchdown on Mars
• Mars probe provides radiation revelations

Alan Boyle is NBCNews.com's science editor. Connect with the Cosmic Log community by "liking" the log's Facebook page, following @b0yle on Twitter and adding the Cosmic Log page to your Google+ presence. To keep up with Cosmic Log as well as NBC News' other stories about science and space, sign up for the Tech & Science newsletter, delivered to your email in-box every weekday. You can also check out "The Case for Pluto," my book about the dwarf planet and the search for new worlds.