Get ready for the darling of meteor showers this week — the Perseids. Who can deny their appeal? Not only is the shower rich with fiery flashes of meteoric light, but the meteors come in August when the weather’s couldn’t be more ideal. Peak activity is expected Tuesday night, Aug. 12-13, when up to 100 meteors an hour might be seen.
Ah, but there’s a rub. This year the moon will be only two days past full and radiant enough to drown out the fainter shower members. We’re more likely to see something like 30 meteors an hour, maybe fewer. But all it takes is one bright meteoric flash to make it all worthwhile. Nothing gets the heart pumping like a bright Perseid and the anticipation of the next.
While more meteors are surely more exciting, it’s not a number thing, but the experience of the raw event that makes all the difference. Sure beats sitting in front of a computer screen or watching the latest rerun of The Big Bang Theory, right?
Find a place away from glaring lights to allow your eyes to adapt to the darkness. That way you’ll see more meteors. While the Perseids spit out the occasional fireball, most shower members are going to be closer in brightness to the stars of the Big Dipper. Some leave “smoke” trails called meteor trains. They’re actually tubes of glowing air molecules created as the meteoroid particles speed through the atmosphere at 130,000 mph. Though ‘shooting stars’ can look surprisingly close by, they typically burn up 60-70 miles overhead.
Perseid meteors radiate from the constellation Perseus (hence the name) located a short distance below the “W” of Cassiopeia in the northeastern sky. To know for sure if you’ve seen the genuine item and not a random meteor, follow the trail backward — if it points toward the northeast, you’ve got a ringer!
You can watch for Perseids all week long, but peak activity begins Tuesday evening and continues through dawn Wednesday. The later you stay up, the more meteors you’ll spot because the radiant or point in the sky from which the meteors appear to radiate rises higher with every hour. The higher the radiant, the fewer meteors that get cut off by the horizon.
The observing equipment you were born with and a comfortable chair are all you need to make the most of the event. OK, it’s nice to have a friend along, too, to share the ‘wow’ moments and keep from falling asleep. Sometimes I’m too lazy to haul out a chair and instead sprawl out on the deck or grass. Others prefer their Perseids from a steaming hot tub.
Left-behind sand, seed and pebble-sized particles from comet 109P/Swift-Tuttleare responsible for all the fun. Discovered in 1862, the comet circles the sun every 120 years. Over millennia, 109P has left a stream of debris along its orbit, which the Earth passes through every year in mid-August. Comet grit hits our atmosphere like bugs smacking a car windshield and vaporize in a flashes of light or meteors.
Normally I’d recommend facing east or southeast to watch the shower, but with the moon dominating that direction, look off to the northeast, north or southwest to keep from getting zapped by that old devil moonlight. Even a little dark adaption will help boost your Perseid count. Once situated, sit back, look up and enjoy each and every sparkler that drops from the sky.
And don’t forget to take in the big picture show rolling by. The sky’s a giant calendar that begins with the mid-summer constellations at nightfall and advances through the fall stars to the onset of winter with the rising of Orion at dawn. Let the months fall away as the Earth turns you toward the sun.
Rather than being dead inside, the Moon still has a warm interior that is due to the effect of the Earth’s gravity on our closest major celestial neighbor, a new study says. The results came after looking at results from the SELENE (SELenological and ENgineering Explorer) spacecraft as well as other missions exploring the Moon.
“I believe that our research results have brought about new questions. For example, how can the bottom of the lunar mantle maintain its softer state for a long time? To answer this question, we would like to further investigate the internal structure and heat-generating mechanism inside the Moon in detail,” stated Yuji Harada, the principal investigator of the research team.
“Another question has come up: How has the conversion from the tidal energy to the heat energy in the soft layer affected the motion of the Moon relative to the Earth, and also the cooling of the Moon?” he added. “We would like to resolve those problems as well so that we can thoroughly understand how the Moon was born and has evolved.”
Clues to the Moon’s interior come from examining how the Earth’s gravity deforms its inside through tidal forces. Models show that tidal changes within the moon are likely due to a “soft layer” deep within the lunar mantle. Scientists learned that the Moon has a core (inner portion, made up of metal) and a mantle (made up of rock) through the Apollo missions, which saw astronauts deploy seismic devices that revealed the interior structure.
“The previous studies indicated that there is the possibility that a part of the rock at the deepest part inside the lunar mantle may be molten. This research result supports the above possibility since partially molten rock becomes softer,” the National Astronomical Observatory of Japan stated. “This research has proven for the first time that the deepest part of the lunar mantle is soft, based upon the agreement between observation results and the theoretical calculations.”
Researchers believe the heat occurs in a soft layer that is deep within the mantle, and not throughout the entire Moon. They said that possible future research directions could include why it is only this layer that remains soft, and how tidal energy changes the Moon’s cooling and its relative motion to Earth.
Wow! Check out this video of the Moon passing in front of Saturn from a viewpoint in Brisbane, Australia. This type of phenomenon, called an occultation, happens when one celestial body passes in front of the other from an observer’s standpoint. You can see some information about a June 10 occultation of Saturn, for example, at this link.
“There has been a fair amount of post-processing done on the images to get to this result. The first stage was to adjust the source images so that detail was visible both on Saturn and on the Moon. This is because the two objects are quite different in brightness, and so each individual exposure results in a slightly over-exposed Moon and a slightly under-exposed Saturn,” wrote Teale Britstra, who created the video, on Vimeo.
“After initial processing, the series of images were imported into video editing software, and the resulting footage stabilized to eliminate some small tracking errors between shots,” Britstra continued.
“There was also one LARGE tracking error, where I had to physically move the telescope. This was because the Moon was sinking towards the western horizon and some nearby, large trees which would have obscured the shot had the scope not been moved. This can be seen in the resulting footage as the period where the Moon appears to slow down and slightly change direction.”
You could be forgiven for thinking this summer that the “supermoon” is now a monthly occurrence. But this coming weekend’s Full Moon is indeed (we swear) the closest to Earth for 2014.
What’s going on here? Well, as we wrote one synodic month ago — the time it takes for the Moon to return to the same phase at 29.5 days — we’re currently in a cycle of supermoons this summer. That is, a supermoon as reckoned as when the Full Moon falls within 24 hours of perigee, a much handier definition than the nebulous “falls within 90% of its orbit” proposed and popularized by astrologers.
The supermoons for 2014 fall on July 13th, August 10th and September 8th respectively. You could say that this weekend’s supermoon is act two in a three act movement, a sort of Empire Strikes Back to last month’s A New Hope.
Now for the specifics: Full Moon this weekend occurs on August 10th at 18:10 Universal Time (UT) or 2:10 PM EDT. The Moon will reach perigee or its closest point to the Earth at 17:44 UT/1:44 PM EDT just 26 minutes prior to Full, at 55.96 Earth radii distant or 356,896 kilometres away. This is just under 500 kilometres shy of the closest perigee that can occur at 356,400 kilometres distant. Perigee was closer to Full phase time-wise last year on June 23rd, 2013, but this value won’t be topped or tied again until November 25th, 2034. The Moon will be at the zenith and closest to the surface of the Earth at the moment it passes Full over the mid-Indian Ocean on Sunday evening nearing local midnight.
Now for a reality check: The August lunar perigee only beats out the January 1st approach of the Moon for the closest of 2014 by a scant 25 kilometres. Perigees routinely happen whether the Moon is Full or not, and they occur once every anomalistic month, which is the average span from perigee-to-perigee at 27.6 days. This difference between the anomalistic and synodic period causes the coincidence that is the supermoon to precess forward about a month a year. You can see our list of supermoon seasons out until 2020 here.
And don’t forget, the Moon actually approaches you to the tune of about half of the radius of the Earth while it rises to the zenith, only to recede again as it sinks back down to the horizon. The rising Full Moon on the horizon only appears larger mainly due to an illusion known as the Ponzo Effect.
The apparent size of the Moon varies about 14% in angular diameter from 29.3′ (known as an apogee “mini-Moon”) to 34.1′ at its most perigee “super-size” as seen from the Earth.
Astronomers prefer the use of the term Perigee Full Moon, but the supermoon meme has taken on a cyber-life of its own. Of course, we’ve gone on record before and stated that we prefer the more archaic term Proxigean Moon, but the supermoon seems here to stay.
And as with many Full Moon myths, this week’s supermoon will be implicated in everything from earthquakes to lost car keys to other terrestrial woes, though of course no such links exist. Coworkers/family members/strangers on Twitter will once again insist it was “the biggest ever,” and claim it took up “half the sky” as they unwittingly take part in an impromptu psychological perception test.
Fun fact: you could ring local the horizon with 633 supermoons!
And of course, many a website will recycle their supermoon posts, though of course not here at Universe Today, as we bake our science fresh daily.
So what can you expect? Well, a perigee Full Moon can make for higher than usual tides. New York City residents had the bad fortune of a Full Moon tidal surge in 2012 when Hurricane Sandy made landfall. Though there doesn’t seem to be a chance for a repeat of such an occurrence in 2014 in the Atlantic, super-typhoon Halong is churning towards the Japanese coastline for landfall this weekend…
Observationally, Full Moon is actually a lousy time for astronomical observations, causing many a deep sky astrophotographer to instead stay home and visit the family, while lurking astrophotography forums and debunking YouTube UFO videos.
Pro-tip: want your supermoon photo/video to go viral? Shoot the rising Moon just the evening prior when it’s waxing gibbous but nearly Full. Not only will it be more likely to be picked up while everyone is focused on supermoon lunacy, but you’ll also have the added bonus of catching the Moon silhouetted against a low-contrast dusk sky. We have a pre-supermoon rising video from a few years back that still trends with each synodic period!
Well, that’s it ‘til September, when it’ll be The Return (Revenge?) of the Supermoon. Be sure to send those pics in to Universe Today’s Flickr forum, you just might make the supermoon roundup!
As we remember the 45th anniversary of Earth’s historic 1st manned lunar landing last week by America’s Apollo 11 crew of Neil Armstrong and Buzz Aldrin on July 20, 1969, it’s likewise well worth recalling NASA’s pioneering and historic unmanned robotic mission Ranger 7 – that led the way to the Moon almost exactly 5 years earlier and that paved the path for the eventual 1st human footsteps on another celestial body.
Indeed the first critical robotic step to the manned landings was successfully taken when NASA’s unmanned Ranger 7 probe captured the first image of the Moon by a U.S. spacecraft 50 Years ago on July 31, 1964.
Ranger 7 took the milestone maiden picture of the Moon by an American spacecraft, on 31 July 1964, shown above, at 13:09 GMT (9:09 AM EDT) about 17 minutes before impacting the lunar surface on a suicide dive.
The history making image was taken at an altitude of 2110 kilometers and is centered at 13 S, 10 W and covers about 360 kilometers from top to bottom. The large Alphonsus crater is at center right and 108 km in diameter. Ptolemaeus crater is above and Arzachel is below.
Ranger 7 impacted out of view of the lead image, off to the left of the upper left corner.
“It looks as though this particular shot has been indeed a textbook operation,” William H. Pickering, the director of JPL during the mission, said at the time.
The purpose of NASA’s robotic Ranger program was to take high-quality pictures of the Moon and transmit them back to Earth in real time before being decimated on impact.
The priceless pictures would be used for science investigations as well as to search for suitable landing sites for NASA’s then planned Apollo manned Moon landers.
It’s hard to conceive now, but 5 decades ago at the dawn of the Space Age no one knew what the surface of the Moon was really like. There were vigorous debates back then on whether it was even hard or soft. Was it firm? Would a landed spacecraft or human astronaut sink?
Altogether the probe took 4,308 excellent quality pictures during its final 17 minutes before crashing into the Moon at 13:26 GMT (9:26 p.m. EDT) in an area between Mare Nubium and Oceanus Procellarum at a spot subsequently named Mare Cognitum at 10.63 S latitude, 20.60 W longitude.
The final image from Ranger 7 shown herein had a resolution of 0.5 meter/pixel.
Ranger 7 was launched atop an Atlas Agena B rocket on 28 July 1964 from what was then known as Cape Kennedy and smashed into our nearest neighbor after 68.6 hours of flight at a velocity of 2.62 km/s (1.62 miles per second).
The 365.7 kilogram (806 lb) vehicle was 4.5 m wide and stood 3.6 m (11 ft) tall and was the Block 3 version of the Ranger spacecraft. It was powered by a pair of 1.5 m long solar panels and was equipped with a science payload of six television vidicon cameras transmitting data via the pointable high gain antennae mounted at the base.
Ranger 7 was the first successful mission in the Ranger series. The flight was entirely successful and was followed by Ranger’s 8 and 9. They were built by NASA’s Jet Propulsion Laboratory, Pasadena, California.
Here’s a short 1964 documentary chronicling Ranger 7 titled “Lunar Bridgehead” that truly harkens back to the 1950s and 1960s and sci fi movies of the time. No wonder since that’s when it was produced.
Video Caption. This 1964 documentary titled “Lunar Bridgehead produced by NASA’s Jet Propulsion Laboratory, Pasadena, California, chronicles the moments leading up to and following the Ranger 7 mission’s lunar impact 50 years ago. Credit: NASA/JPL-Caltech
During the 1960’s NASA implemented an ambitions three pronged strategy of robotic missions – including Ranger, Lunar Orbiter and Surveyor – that imaged the Moon and studied it’s physical and chemical properties and supported and enabled the Apollo program and led directly to Neil Armstrong stepping onto the alien lunar landscape.
Read more about pathfinding space missions in my earlier space history story about Mariner 10 – the first space probe to ever carry out a planetary gravity assist maneuver used to alter its speed and trajectory – in order to reach another celestial body – here.
But once the stuff is extracted, who does it belong to? A bill being considered by the U.S. House of Representatives says it would belong to “the property of the entity that obtained such resources.”
In a blog on Space Politics, aerospace analyst Jeff Foust outlined a discussion on the bill at the NewSpace 2014 conference last week. There are still a few wrinkles to be worked out, with one of the most pressing being to define what the definition of an asteroid is. Also, the backers of the bill are talking with the U.S. State Department to see if it would conflict with any international treaty obligations. (Here’s a copy of the bill on the Space Politics website.)
The panel also noticed there is precedent for keeping and even selling samples: the visits to the Moon. Both Apollo astronauts (with the United States) and the Luna robotic missions (from the Soviet Union) returned samples of the Moon to the Earth. Some of the Apollo rocks, for example, are on display in museums. Others are stored in the NASA Lunar Sample Laboratory Facility at the Johnson Space Center in Houston.
That said, extraterrestrial property rights are difficult to define. For example, the United Nations Moon Treaty (more properly known as Agreement Governing the Activities of States on the Moon and Other Celestial Bodies) allows samples to be removed and stored for “scientific purposes”, and during these investigations they may “also use mineral and other substances of the moon in quantities appropriate for the support of their missions.” But it also adds that “the moon and its natural resources are the common heritage of mankind.”
“Neil Armstrong – A Life of Flight” is a thoroughly enjoyable new biography about the first human to set foot on the Moon on NASA’s Apollo 11 mission written with gusto by Emmy winning NBC News space correspondent Jay Barbree.
Jay Barbee is a veteran NBC News reporter who has covered America’s manned space program from the start. And he has the distinction of being the only reporter to cover every single American manned space launch – all 166 from Alan Shepard in 1961 to STS-135 in 2011 – from his home base at the Kennedy Space Center in Florida allowing him to draw on a wealth of eyewitness experiences and inside contacts.
The book’s publication coincides with the 45th anniversary of the Flight of Apollo 11 on America’s first manned moon landing mission in July 1969 by the three man crew comprising Commander Neil Armstrong, fellow moonwalker and Lunar Module Pilot Buzz Aldrin and Command Module pilot Michael Collins.
It’s a meticulously researched book over five decades in the making and based on personal interviews, notes, meetings, remembrances, behind the scenes visits, launches and more between Neil Armstrong and his trusted friend Jay Barbree as well as hordes more officials and astronauts key to achieving NASA’s spaceflight goals.
He won that trust because the astronauts and others trusted that he would get the story right and never betray confidences, Jay told me in an interview about the book.
“This is really Neil’s book. And it’s as accurate as possible. I will never reveal something Neil told me in confidence. But there is far more in this book about Neil than he would have liked.”
There is a six page list of acknowledgments and the forward is written by no less than John Glenn – the first American to orbit the Earth in 1962.
Barbree is a master story teller who amply illustrates why NASA felt Armstrong was the best candidate to be 1st Man on the Moon based on his extraordinary intellect, piloting skills, and collected coolness and clear thinking under extraordinary pressure.
Armstrong also always shied away from publicity and bringing attention to himself, Barbree told me.
“Neil did not think he was any more important than anyone else. Neil wanted to do a book about a life of flight. But he wanted everyone else included.” And that’s exactly the format for the book – including Armstrong’s colleagues in words and pictures.
On July 21, NASA officially renamed a historic human spaceflight facility at the Kennedy Space Center in honor of Mission Commander Neil Armstrong – read my story here.
Barbree details Armstrong’s lifetime of flight experiences that led to the ultimate Moon landing moment; starting with his early experiences as a Korean war combat pilot and bailing out of a crippled Panther F9F fighter plane, flying the X-15 to an altitude of 39 miles and the edge of space as a NASA test pilot, his selection as a member of the second group of astronauts on September 17, 1962, his maiden space mission on Gemini 8 which suddenly went out of control and threatened the crews lives, and finally the landing on the Sea of Tranquility with only 30 seconds of fuel remaining.
“Neil Armstrong – A Life of Flight” is a book for anyone interested in learning the nitty gritty inside details starting from the founding of America’s space effort, the trials, tribulations and triumphs of the earlier Mercury and Gemini manned programs, the terrible tragedy of the Apollo 1 fire and death of three brave Americans – Gus Grissom, Ed White and Roger Chaffee – and how all this swirl lead up to America’s determined and miraculous effort recounting how we got to the Moon. Go elsewhere for gossip.
This hefty 350 page volume is absolutely chock full of details including copious quotes on virtually every page. So much so that Barbree brings the along reader for what seems like a firsthand account. It’s as though he were a fly in the room listening in on history being made and transcribing it second by second or as an actual crew member riding along himself and reporting ultimately from aboard Apollo 11 and the Moon’s desolate surface.
Barbree does this by putting into context the full meaning and breadth of what’s happening on a moment by moment basis. Giving you the reader a complete understanding of what, why and how these history making events transpired as they did.
I found his background information endlessly illuminating and informative ! – precisely because it’s not merely a transcription of dialogue.
Concerning the mild controversy regarding Armstrong’s actual first words spoken from the lunar surface, here’s excerpts from how Jay tells the story on p. 263:
“He had thought about one statement he judged had meaning and fit the historic occasion …. Neil had not made up his mind … he was undecided until he was faced with the moment.
Armstrong then lifted his left boot .. and set it down in moon dust.
“That’s one small step for man,” Neil said with a momentary pause. “One giant leap for mankind.”
What most didn’t know was that Neil had meant to say, “That’s one small step for a man,” and that set off an argument for years to come. Had a beep in transmission wiped it from our ears or had Neil nervously skipped the word?
Knowing Neil’s struggles with public speaking, I believe the latter, and with all the excitement … I’ve never been convinced Neil knew himself for sure,” Barbree wrote.
Towards the books conclusion, he writes of Armstrong; “No greater man walked among us. No better man left us informed answers. Neil taught us how to take care of our Earth-Moon system.”
I also enjoyed towards the end of the book where Jay includes Neil’s disappointment that we haven’t ventured beyond Earth orbit in over 4 decades and includes Neil’s personal testimony to Congress so we learn the detail of Armstrong thoughts – in his own words.
“I am persuaded that a return to the moon would be the most productive path to expanding the human presence in the solar system.”
Jay also pinpoints why we haven’t returned to the Moon; “lack of vision for the future” by Congress and Presidents “have kept astronauts locked in Earth orbit.”
It’s been my privilege to get to know Jay during my own space reporting from the press site at the Kennedy Space Center and interview him about his magnificent new book.
Read Jay Barbree’s new 8 part series of 45th anniversary Apollo 11 stories at NBC News here:
Armstrong passed away unexpectedly at age 82 on August 25, 2012 due to complications from heart bypass surgery. Read my prior tribute articles: here and here
Despite Armstrong’s premature passing, Barbree told me he had completed all the interviews.
“There isn’t anything that comes to mind about Neil Armstrong that I didn’t get to ask him,” Barbree told me.
Read my story about the deep sea recovery of the Apollo 11 first stage F-1 engines in 2013 – here.
Jay Barbree is on a book signing tour and you might be lucky to catch him at an event like a colleague of mine did at the Smithsonian National Air & Space Museum recently. See photo below.
Stay tuned here for Ken’s Earth & Planetary science and human spaceflight news.
45 years ago on July 20, 1969, NASA astronaut and Apollo 11 Commander Neil Armstrong became the first human being to set foot on another celestial body when he stepped off the Apollo 11 Lunar Module Eagle and onto our Moon’s utterly alien surface.
Today, July 21, 2014, NASA officially renamed a historic facility at the Kennedy Space Center vital to human spaceflight in honor of Neil Armstrong during a a 45th anniversary ceremony at what until today was known as the ‘Operations and Checkout Building’ or O & C.
On that first moonwalk, Armstrong was accompanied by fellow NASA astronaut Buzz Aldrin on a two and a half hour excursion that lasted into the early morning hours of July 21. They came in peace representing all mankind.
Today’s ceremony was broadcast on NASA TV and brought together numerous dignitaries including Armstrong’s surviving crewmates Buzz Aldrin and Command Module pilot Mike Collins, Apollo 13 Commander Jim Lovell who was also Apollo 11’s backup commander, NASA Administrator Charlie Bolden, Kennedy Space Center Director Bob Cabana, and Armstrong’s family members including his sons Rick and Mark Armstrong who all spoke movingly at the dedication.
They were joined via a live feed from space by two NASA astronauts currently serving aboard the International Space Station (ISS) – Expedition 40 crew member Rick Wiseman and Commander Steve Swanson.
The backdrop for the ceremony was the Orion crew capsule, NASA’s next generation human rated spaceflight vehicle which is currently being assembled in the facility and is set to launch on its maiden unmanned test flight in December 2014. Orion will eventually carry US astronauts on journey’s to deep space destinations to the Moon, Asteroids and Mars.
Many of Armstrong’s colleagues and other officials working on Orion and NASA’s human spaceflight missions also attended.
The high bay of what is now officially the ‘Neil Armstrong Operations and Checkout Building’ was built in 1964 and previously was known as the Manned Spacecraft Operations Building.
It has a storied history in human spaceflight. It was used to process the Gemini spacecraft including Armstrong’s Gemini 8 capsule. Later it was used during the Apollo program to process and test the command, service and lunar modules including the Apollo 11 crew vehicles that were launched atop the Saturn V moon rocket. During the shuttle era it housed the crew quarters for astronauts KSC training and for preparations in the final days leading to launch.
“45 years ago, NASA’s journey to land the first human on the Moon began right here,” NASA Administrator Charlie Bolden said at the ceremony. “It is altogether fitting that today we rename this facility the Neil Armstrong Operations and Checkout Building. Throughout his life he served his country as an astronaut, an aerospace engineer, a naval aviator, a test pilot and a university professor, and he constantly challenged all of us to expand the boundaries of the possible.”
“He along with his crewmates, Buzz Aldrin and Michael Collins, are a bridge from NASA’s historic journey to the moon 45 years ago to our path to Mars today.”
The Apollo 11 trio blasted off atop a 363 foot-tall Saturn V rocket from Launch Complex 39A on their bold, quarter of a million mile moon mission from the Kennedy Space Center , Florida on July 16, 1969 to fulfill the lunar landing quest set by President John F. Kennedy early in the decade.
Armstrong and Aldrin safely touched down at the Sea of Tranquility on the lunar surface on July 20, 1969 at 4:18 p.m EDT as hundreds of millions across the globe watched in awe.
“Houston, Tranquility Base here. The Eagle has landed !,” Armstrong called out and emotional applause erupted at Mission Control – “You got a bunch of guys about to turn blue.”
Armstrong’s immortal first words:
“That’s one small step for [a] man, one giant leap for mankind.”
During their 2 ½ hours moonwalk Armstrong and Aldrin unveiled a plaque on the side of the lunar module. Armstrong read the words;
“Here men from the planet Earth first set foot upon the moon. July 1969 A.D. We came in peace for all mankind.”
Here is NASA’s restored video of the Apollo 11 EVA on July 20, 1969:
Video Caption: Original Mission Video as aired in July 1969 depicting the Apollo 11 astronauts conducting several tasks during extravehicular activity (EVA) operations on the surface of the moon. The EVA lasted approximately 2.5 hours with all scientific activities being completed satisfactorily. The Apollo 11 EVA began at 10:39:33 p.m. EDT on July 20, 1969 when Astronaut Neil Armstrong emerged from the spacecraft first. While descending, he released the Modularized Equipment Stowage Assembly on the Lunar Module’s descent stage.
Armstrong passed away at age 82 on August 25, 2012 due to complications from heart bypass surgery. Read my prior tribute articles: here and here
Michael Collins concluded the ceremony with this tribute:
“He would not have sought this honor, that was not his style. But I think he would be proud to have his name so closely associated with the heart and the soul of the space business.”
“On Neil’s behalf, thank you for what you do every day.”
Stay tuned here for Ken’s Earth & Planetary science and human spaceflight news.
Forty-five years ago yesterday, the Sea of Tranquility saw a brief flurry of activity when Neil Armstrong and Buzz Aldrin dared to disturb the ancient lunar dust. Now the site has lain quiet, untouched, for almost half a century. Are any traces of the astronauts still visible?
The answer is yes! Look at the picture above of the site taken in 2012, two years ago. Because erosion is a very gradual process on the moon — it generally takes millions of years for meteors and the sun’s activity to weather features away — the footprints of the Apollo 11 crew have a semi-immortality. That’s also true of the other five crews that made it to the moon’s surface.
In honor of the big anniversary, here are a few of NASA’s Lunar Reconnaissance Orbiter’s pictures of the landing sites of Apollo 11, Apollo 12, Apollo 14, Apollo 15, Apollo 16 and Apollo 17. (Apollo 13 was slated to land on the moon, but that was called off after an explosion in its service module.)
The Eagle Prepares to Land
The Apollo 11 Lunar Module Eagle, in a landing configuration was photographed in lunar orbit from the Command and Service Module Columbia. Inside the module were Commander Neil A. Armstrong and Lunar Module Pilot Buzz Aldrin. The long rod-like protrusions under the landing pods are lunar surface sensing probes. Upon contact with the lunar surface, the probes sent a signal to the crew to shut down the descent engine. Image Credit: NASA Watch the restored EVA video below and on NASA TV on July 20 starting at 10:39 p.m. EDT[/caption]
Man first walked on the Moon 45 years ago today on July 20, 1969 when American astronauts Neil Armstrong and Buzz Aldrin opened the hatch to the Apollo 11 Lunar Module Eagle, climbed down the ladder and set foot on the surface – marking mankind’s greatest achievement. They came in peace for all mankind!
You can relive the historic moment with the gallery of Apollo 11 NASA images collected here and by watching NASA’s restored video of the moonwalk, or extravehicular activity (EVA) by Armstrong and Aldrin – watch video below. The Apollo 11 EVA began at 10:39:33 p.m. EDT.
NASA TV is also broadcasting a replay of the historic moonwalk tonight (July 20) to commemorate the anniversary starting at 10:39 p.m. EDT, with the restored footage of Armstrong and Aldrin’s historic steps on the lunar surface.
You can view the NASA TV Apollo 11 EVA webcast – here.
The Eagle had landed on the Moon’s desolate surface on the Sea of Tranquility (see map below) barely 6 hours earlier at 4:18 p.m EDT. And only 30 seconds of fuel remained as Armstrong searched for a safe landing spot.
Neil Armstrong was the commander of the three man crew of Apollo 11, which included fellow moonwalker Buzz Aldrin and Command module pilot Michael Collins.
Here is NASA’s restored video of the Apollo 11 EVA on July 20, 1969:
Video Caption: Original Mission Video as aired in July 1969 depicting the Apollo 11 astronauts conducting several tasks during extravehicular activity (EVA) operations on the surface of the moon. The EVA lasted approximately 2.5 hours with all scientific activities being completed satisfactorily. The Apollo 11 EVA began at 10:39:33 p.m. EDT on July 20, 1969 when Astronaut Neil Armstrong emerged from the spacecraft first. While descending, he released the Modularized Equipment Stowage Assembly on the Lunar Module’s descent stage.
The trio blasted off atop a 363 foot-tall Saturn V rocket from Launch Complex 39A on their bold, quarter of a million mile moon mission from the Kennedy Space Center , Florida on July 16, 1969 to fulfill the lunar landing quest set by President John F. Kennedy early in the decade.
The three-stage Saturn V generated 7.5 million pounds of thrust and propelled the trio into space and immortality.
The Apollo 11 mission was truly a global event.
Armstrong and Aldrin safely touched down at the Sea of Tranquility on the lunar surface on July 20, 1969 at 4:18 p.m EDT as hundreds of millions across the globe watched in awe and united in purpose.
“Houston, Tranquility Base here. The Eagle has landed !,” Armstrong called out and emotional applause erupted at Mission Control – “You got a bunch of guys about to turn blue.”
Armstrong carried all of humanity with him when he stepped off the footpad of NASA’s Apollo 11 Lunar Module and became the first representative of the human species to walk on the surface of another celestial body.
Armstrong’s first immortal words:
“That’s one small step for [a] man, one giant leap for mankind.”
During their 2 ½ hours moonwalk Armstrong and Aldrin unveiled a plaque on the side of the lunar module. Armstrong read the words;
“Here men from the planet Earth first set foot upon the moon. July 1969 A.D. We came in peace for all mankind.”
The duo collected about 50 pounds (22 kg) of priceless moon rocks and set out the first science experiments placed by humans on another world. The moon rocks were invaluable in informing us about the origin of the Earth – Moon system.
Altogether Armstrong and Aldrin spent about 21 hours on the moon’s surface. Then they said goodbye to the greatest adventure and fired up the LM ascent engine to rejoin Michael Collins circling above in the Apollo 11 Command Module.
Following the triumphant moonwalk and docking, the crew set their sights for the journey back to the Home Planet.
The Apollo 11 mission ended with a successful splash down off Hawaii on July 24.
The crew, NASA and America achieved President Kennedy’s challenge of men walking on the Moon before the decade was out and returning safely to Earth.
Armstrong passed away at age 82 on August 25, 2012 due to complications from heart bypass surgery. Read my prior tribute articles: here and here
Surviving crew members Aldrin and Collins will join NASA Administrator Charles Bolden at a ceremony on Monday at the Kennedy Space Center.
Altogether a dozen Americans have walked on the Moon during NASA’s five additional Apollo lunar landing missions. No human has returned since the final crew of Apollo 17 departed the Moon’s surface in December 1972.
One legacy of Apollo is the International Space Station (ISS) where six astronauts and cosmonauts work together on science research to benefit mankind.
Notably, the Cygnus commercial cargo ship berthed at the ISS on the 45th anniversary of the Apollo 11 liftoff bringing over 3600 pounds of science experiments and supplies to the station.
NASA’s next big human spaceflight goals are building commercial ‘space taxis’ to low Earth orbit in this decade, an asteroid retrieval mission in the 2020s and voyages to Mars in the 2030s using the new SLS rocket and Orion deep space crew capsule currently under development.
Stay tuned here for Ken’s Earth & Planetary science and human spaceflight news.