Posted on by Nancy Atkinson

Apollo 17: 40 Years Ago Today

The launch of Apollo 17. Credit: NASA

It was the end of an era. At 12:33 a.m. (EST) on Dec. 7, 1972 the monstrous Saturn V rocket blasted off for the final Apollo mission to the Moon. It was a stunning sight, as it was the first nighttime liftoff of the Saturn V. Aboard the Apollo 17 spacecraft were astronauts Gene Cernan, Ron Evans and Jack Schmitt.

Below are a couple of images and videos from the mission, one video is an overview of the mission, and the other is one of my favorite scenes:

Gene Cernan driving the lunar rover during the Apollo 17 mission on the Moon. Credit: NASA

Jack Schmitt with the lunar rover at the edge of Shorty Crater. Credit: NASA

The famous “Blue Marble” image of Earth taken by the Apollo 17 crew on Dec. 7, 1972. Credit: NASA

Posted on by John Williams

Seeking the Moon’s Rare Atmosphere

Using the dim light of distant stars reflecting off of the surface of the Moon, scientists using a spectrometer aboard NASA’s Lunar Reconnaissance Orbiter have found traces of the Moon’s tenuous atmosphere. But don’t expect to take off your protective spacesuit. The Moon’s atmosphere is made of helium.

“The question now becomes, does the helium originate from inside the Moon, for example, due to radioactive decay in rocks, or from an exterior source, such as the solar wind.” says Dr. Alan Stern, LAMP principal investigator and associate vice president of the Space Science and Engineering Division at Southwest Research Institute, Boulder, Colo.

Scientists designed the Lyman Alpha Mapping Project (LAMP) spectrometer aboard LRO to map the lunar surface but the confirmation that helium surrounds Earth’s largest natural satellite was a bonus, Stern told Universe Today.

“LAMP was designed to simply do what we had not done in 40 years; to look closely at the surface of the Moon,” Stern said. “This really is a breakthrough, a capability discovery.”

LAMP’s findings support work done by the Lunar Atmosphere Composition Experiment, or LACE, that was left behind by Apollo 17 astronauts in 1972. LAMP is designed to examine far ultraviolet emissions in the tenuous atmosphere above the Moon’s surface.

Some elements found on the Moon, such as carbon or sodium, can be studied from Earth. Helium is not one of these, Stern says. Helium only shows very weakly in the far ultraviolet part of the spectrum. The signature is too weak to be seen from the 250,000 miles separating the Moon from Earth. Earth’s ozone layer also absorbs ultraviolet radiation making detection from ground-based detectors impossible.

And with LAMP moving over the lunar surface, we can see more than we’d see with a simple lander, Stern said.

During its mission, LACE detected argon but so far only helium has been confirmed from LAMP’s spectrograph. Although, the noble gas argon is much fainter than helium to the spectrograph, LAMP will seek this and other gases as well.

John Williams is a science writer and owner of TerraZoom, a Colorado-based web development shop specializing in web mapping and online image zooms. He also writes the award-winning blog, StarryCritters, an interactive site devoted to looking at images from NASA’s Great Observatories and other sources in a different way. A former contributing editor for Final Frontier, his work has appeared in the Planetary Society Blog, Air & Space Smithsonian, Astronomy, Earth, MX Developer’s Journal, The Kansas City Star and many other newspapers and magazines.

Posted on by Elizabeth Howell

Chasing Gene Cernan’s Childhood — and Apollo Years

A wonderful travel moment of serendipity: While sitting near a convention centre in Chicago, I punched in nearby points of interest in my GPS and found something called the Cernan Earth and Space Center.

Suspecting it had something to do with Eugene Cernan, one of the last two men to walk on the moon, I drove to a small building on the Triton College campus, walked inside the front door, and was astounded at what was visible from the entrance.

An Apollo spacesuit. A helmet. A spacecraft gimbal. A diorama of lunar and Martian vehicles. Various pictures, tokens and artifacts showing Eugene Cernan’s aerospace life — all for free.

While I gaped at these artifacts, center director Bart Benjamin approached me and explained Cernan had grown up in the neighbourhood — in fact, his high school is just a few miles away, Benjamin explained. The artifacts are mostly loans from the Smithsonian (the spacesuit was briefly returned there for cleaning and restoration recently); revenues for the center come from its gift shop and laser/planetarium shows, which run several evenings a week.

I unfortunately was not able to stay for a laser show, but I did ask Benjamin for directions to Cernan’s school. Cernan went to Proviso Township High School, now known as Proviso East.

According to Cernan’s biography Last Man on the Moon, at high school he played varsity basketball, baseball and football and was courted by a couple of schools offering football scholarships.

But influenced by the Korean War, he instead applied for a Naval scholarship and did not get his first choice, receiving only partial financing to head to Purdue, as he recalls:

I didn’t want it, because I knew my entire family would have to work hard to pay for me to attend Purdue as an out-of-state student. But at Dad’s insistence, I reluctantly agreed, knowing that not only would I get a degree, but I could still get a commission in the Navy, albeit in the reserves, and maybe somehow could spin that into my dream of flying.

Cernan graduated in 1952 and he flew, all right — including walking on the Moon just 20 years later.

All pictures by Elizabeth Howell.

Elizabeth Howell (M.Sc. Space Studies ’12) is a contributing editor for SpaceRef and award-winning space freelance journalist living in Ottawa, Canada. Her work has appeared in publications such as SPACE.com, Air & Space Smithsonian, Physics Today, the Globe and Mail, the Canadian Broadcasting Corp.,  CTV and the Ottawa Business Journal.