In Martian Orbit

Thirty-five years ago today — June 19, 1976 — Viking-1 arrived at Mars.


(Viking-1 orbiter. NASA image.)

The Viking-1 orbiter spent a month imaging the red planet while mission controllers picked the best spot for its lander. The orbiter released the lander on July 20th.

The orbiter shut down its mission operations during the solar conjunction (when the Earth was on the opposite side of the Sun from Mars) from November 5 until December 14, 1976. The orbiter continued to function until August 17, 1980.

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Verifying Gravitational Redshift, 35 Years Ago

Thirty-five years ago this week — as of this writing, I can’t confirm the exact date — a Scout rocket launched from Wallops Flight Center, Virginia, with an experiment to test one of Einstein’s relativistic predictions.

The probe, known by several names but most commonly now as Gravity Probe A, launched on a high-altitude sub-orbital trajectory: it essentially flew nearly straight up to a height of just over 10,000 km (6200 mi), and then nearly straight back down to the Atlantic Ocean.

During its brief sojourn into space, however, the payload accomplished its mission. Gravity Probe A carried a highly accurate maser* clock, which the Theory of Relativity predicted would run faster at that altitude than its sister clock on Earth. The experiment confirmed this Gravitational redshift phenomenon.

As for the date, my original NASA history source listed it as today — June 18th — and so does the Wikipedia entry. The National Space Science Data Center, however, lists it as having launched on the 16th, though an archived version of the NSSDC page listed it as the 17th and so did another site. So, suffice it to say that sometime around this part of June, 35 years ago, experimenters confirmed a key prediction of Einstein’s theory. And if anyone knows the exact date, with confidence, let me know.

___
*Microwave Amplification by Stimulated Emission of Radiation; by analogy, a “microwave laser”

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Launch of a Doomed Space Station Crew

Forty years ago today — June 6, 1971 — Soyuz-11 launched from the Baikonur Cosmodrome, carrying the first crew to the USSR’s Salyut-1 space station.

The Soyuz-11 crew, cosmonauts Georgi T. Dobrovolskiy, Vladislav N. Volkov and Viktor I. Patseyev, spent three weeks aboard Salyut. Their separation from Salyut-1 on June 30th was nominal, and before they entered the atmosphere the service module of the Soyuz vehicle detached from the descent module; however, as reported on this Wikipedia page, a pressure equalization valve failed and the crew asphyxiated before their vehicle reached the ground.

Here’s a link to a July 1971 Time Magazine article about the Soyuz-11 disaster: Triumph and Tragedy of Soyuz-11.

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Rodents and Jellyfish in Space … It's Science, Folks

Twenty years ago today — June 5, 1991 — the Space Shuttle Columbia lifted off from the Kennedy Space Center.


(The Spacelab module in the shuttle cargo bay. NASA image.)

The STS-40 crew — Bryan D. O’Connor, Sidney M. Gutierrez, M. Rhea Seddon, James Bagian, Tamara Jernigan, F. Andrew Gaffney, and Millie Hughes-Fulford — spent 9 days in space conducting a variety of life sciences experiments in the Spacelab module in the shuttle’s cargo bay. Not only did they run a variety of experiments, but they ran them on a variety of test subjects: themselves, a collection of 30 rodents, and “thousands of tiny jellyfish.”

Of course, all of this serious science stuff has to give way now and then to a little frivolity:


(The STS-40 crew pose on the shuttle’s middeck, with an apparent stowaway. NASA image.)

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Another Step Toward Apollo: Gemini-9

Forty-five years ago today — June 3, 1966 — Gemini-9 launched from Cape Canaveral on a Titan-II rocket.


(Gemini-9 in orbit. NASA image.)

The crew of Gemini-9, Thomas P. Stafford and Eugene A. Cernan, carried out a series of maneuvers to simulate future Apollo rendezvous maneuvers. They were supposed to actually dock with a target vehicle, but they saw “that the launch shroud … had failed to deploy and was blocking the docking port.”

Another part of the mission profile was to test the Astronaut Maneuvering Unit, but that test also ran into difficulty:

On 5 June at 10:02 a.m. EST the Gemini capsule was depressurized and the hatch above Cernan opened. Cernan was out of the spacecraft at 10:19, attached by an 8 meter long tether which was connected to Gemini’s oxygen supply. He had no gas maneuvering unit as was used on Gemini 4. He retrieved the micrometeorite impact detector attached to the side of the capsule and then moved about the spacecraft. He had great difficulty manuevering and maintaining orientation on the long tether. He took photographs of Gemini from the full length of the tether and finally moved to the back of the capsule where the Astronaut Maneuvering Unit (AMU) was mounted. He was scheduled to don the AMU, disconnect from the Gemini oxygen supply (although he would still be attached to the spacecraft with a longer, thinner tether) and move to 45 meters from the capsule. The task of donning the AMU took “four to five times more work than anticipated”, overwhelming Cernan’s environmental control system and causing his faceplate to fog up, limiting his visibility. It was also discovered that the AMU radio transmissions were garbled. These problems caused Stafford to recall Cernan to the spacecraft. He reentered the spacecraft at 12:05 p.m. and the hatch was closed at 12:10. Cernan was the third person to walk in space and his total time of 2 hours, 8 minutes was the longest spacewalk yet.

The image above shows one of the pictures Cernan took of the Gemini spacecraft.

Stafford and Cernan de-orbited and splashed down on June 6th.

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Surveyor-1 Lands

Forty-five years ago today — June 2, 1966 — Surveyor-1 landed on the moon.


(Surveyor-1 landing site, imaged by the Lunar Reconnaissance Orbiter. NASA image.)

As we noted in a previous space history item, Surveyor-1 launched on May 30th. On this date, it became the first U.S. spacecraft to land on the Moon.

Surveyor 1’s first hour on the Moon was spent performing engineering tests. Photography sessions were then initiated throughout the remainder of the lunar day. The television system transmitted pictures of the spacecraft footpad and surrounding lunar terrain and surface materials. Some 10,338 photos were returned prior to nightfall on June 14.

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Mars-3 Launches, to Follow Mars-2

Forty years ago today — May 28, 1971 — the USSR launched the Mars-3 probe.

With the identical Mars-2 mission already on its way, Mars-3 launched from the Baikonur Cosmodrome to follow it to the red planet. Once it arrived, on December 2, 1971, Mars-3 became the first craft to make a soft landing on the surface of Mars. However, perhaps because of a raging dust storm at the time of landing, it only operated for about 20 seconds before contact was lost.

Interestingly, the Mars-2 and Mars-3 missions were even more ambitious than just placing landers on the surface. Each lander also carried a small robot that was intended to “walk” on the Martian surface on a set of skis, taking radiation measurements along the way.

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The Apollo Speech: 'Now it is time to take longer strides'

Fifty years ago today — May 25, 1961 — President John F. Kennedy spoke to Congress about several national priorities, and laid out the goal of what would become the Apollo program. He said, “Now it is time to take longer strides–time for a great new American enterprise–time for this nation to take a clearly leading role in space achievement, which in many ways may hold the key to our future on earth.”


(President Kennedy speaking to Congress. Image from NASA’s history site.)

Speaking close on the heels of Yuri Gagarin’s orbital flight and Alan Shepard’s sub-orbital flight, Kennedy proposed an ambitious agenda in the final major section of his Special Message to the Congress on Urgent National Needs. With emphasis added, and a little commentary interspersed, here’s the text:

… if we are to win the battle that is now going on around the world between freedom and tyranny, the dramatic achievements in space which occurred in recent weeks should have made clear to us all, as did the Sputnik in 1957, the impact of this adventure on the minds of men everywhere, who are attempting to make a determination of which road they should take. Since early in my term, our efforts in space have been under review. With the advice of the Vice President, who is Chairman of the National Space Council, we have examined where we are strong and where we are not, where we may succeed and where we may not. Now it is time to take longer strides–time for a great new American enterprise–time for this nation to take a clearly leading role in space achievement, which in many ways may hold the key to our future on earth.

The last sentence of that paragraph is speechwriting gold: a wonderful triplet that wraps up in the appropriately grand idea of the future of all mankind.

I believe we possess all the resources and talents necessary. But the facts of the matter are that we have never made the national decisions or marshalled the national resources required for such leadership. We have never specified long-range goals on an urgent time schedule, or managed our resources and our time so as to insure their fulfillment.

Recognizing the head start obtained by the Soviets with their large rocket engines, which gives them many months of leadtime, and recognizing the likelihood that they will exploit this lead for some time to come in still more impressive successes, we nevertheless are required to make new efforts on our own. For while we cannot guarantee that we shall one day be first, we can guarantee that any failure to make this effort will make us last. We take an additional risk by making it in full view of the world, but as shown by the feat of astronaut Shepard, this very risk enhances our stature when we are successful. But this is not merely a race. Space is open to us now; and our eagerness to share its meaning is not governed by the efforts of others. We go into space because whatever mankind must undertake, free men must fully share.

Another excellent phrase: “whatever mankind must undertake, free men must fully share.”

I therefore ask the Congress, above and beyond the increases I have earlier requested for space activities, to provide the funds which are needed to meet the following national goals:

First, I believe that this nation should commit itself to achieving the goal, before this decade is out, of landing a man on the moon and returning him safely to the earth. No single space project in this period will be more impressive to mankind, or more important for the long-range exploration of space; and none will be so difficult or expensive to accomplish. We propose to accelerate the development of the appropriate lunar space craft. We propose to develop alternate liquid and solid fuel boosters, much larger than any now being developed, until certain which is superior. We propose additional funds for other engine development and for unmanned explorations–explorations which are particularly important for one purpose which this nation will never overlook: the survival of the man who first makes this daring flight. But in a very real sense, it will not be one man going to the moon–if we make this judgment affirmatively, it will be an entire nation. For all of us must work to put him there.

Kennedy masterfully pulls the entire nation together into this grand enterprise. He will repeat the idea later, in a more direct way. First, some specifics …

Secondly, an additional 23 million dollars, together with 7 million dollars already available, will accelerate development of the Rover nuclear rocket. This gives promise of some day providing a means for even more exciting and ambitious exploration of space, perhaps beyond the moon, perhaps to the very end of the solar system itself.

Think how far out we might have space outposts if we had nuclear rockets. If you’re less optimistic, you might think about accidents with nuclear rockets; but still, nuclear propulsion would take us farther than chemical rockets ever will.

Third, an additional 50 million dollars will make the most of our present leadership, by accelerating the use of space satellites for world-wide communications.

Fourth, an additional 75 million dollars–of which 53 million dollars is for the Weather Bureau–will help give us at the earliest possible time a satellite system for world-wide weather observation.

Let it be clear–and this is a judgment which the Members of the Congress must finally make–let it be clear that I am asking the Congress and the country to accept a firm commitment to a new course of action, a course which will last for many years and carry very heavy costs: 531 million dollars in fiscal ’62–an estimated seven to nine billion dollars additional over the next five years. If we are to go only half way, or reduce our sights in the face of difficulty, in my judgment it would be better not to go at all.

No doubt, then as now, many people believed it would be better not to go at all. I, obviously, am not one of them. I like the way he lays it out as a challenge, though: in effect advising Congress to go “all in” long before poker became a popular spectator game.

Now this is a choice which this country must make, and I am confident that under the leadership of the Space Committees of the Congress, and the Appropriating Committees, that you will consider the matter carefully.

It is a most important decision that we make as a nation. But all of you have lived through the last four years and have seen the significance of space and the adventures in space, and no one can predict with certainty what the ultimate meaning will be of mastery of space.

I believe we should go to the moon. But I think every citizen of this country as well as the Members of the Congress should consider the matter carefully in making their judgment, to which we have given attention over many weeks and months, because it is a heavy burden, and there is no sense in agreeing or desiring that the United States take an affirmative position in outer space, unless we are prepared to do the work and bear the burdens to make it successful. If we are not, we should decide today and this year.

This decision demands a major national commitment of scientific and technical manpower, materiel and facilities, and the possibility of their diversion from other important activities where they are already thinly spread. It means a degree of dedication, organization and discipline which have not always characterized our research and development efforts. It means we cannot afford undue work stoppages, inflated costs of material or talent, wasteful interagency rivalries, or a high turnover of key personnel.

New objectives and new money cannot solve these problems. They could in fact, aggravate them further–unless every scientist, every engineer, every serviceman, every technician, contractor, and civil servant gives his personal pledge that this nation will move forward, with the full speed of freedom, in the exciting adventure of space.

Once again, Kennedy issues the call not only to Congress but to everyone who is likely to be involved in the effort. “This nation will move forward, with the full speed of freedom, in the exciting adventure of space.”

All in all, a brilliant speech — and the rest, as is so often said, is history.

The quest for the Moon had begun.

___
Author’s Note: This is the 2nd attempt to make this post; the first attempt this morning appeared to work but then encountered a technical error.

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The Apollo Speech: Now It Is Time to Take Longer Strides

Fifty years ago today — May 25, 1961 — President John F. Kennedy spoke to the U.S. Congress and laid out the goal of the Apollo program.


(President Kennedy delivering the May 25th speech. Image from a NASA History Office web page.)

A year and a half later, at Rice University, Kennedy would make another important speech on the subject, but the May 1961 was the first. Fresh on the heels of Yuri Gagarin’s orbital flight and Alan Shepard’s suborbital flight, Kennedy said, “Now it is time to take longer strides–time for a great new American enterprise–time for this nation to take a clearly leading role in space achievement, which in many ways may hold the key to our future on earth.”

Here’s the pertinent text of the Special Message to the Congress on Urgent National Needs, with emphasis added in a few places:

Finally, if we are to win the battle that is now going on around the world between freedom and tyranny, the dramatic achievements in space which occurred in recent weeks should have made clear to us all, as did the Sputnik in 1957, the impact of this adventure on the minds of men everywhere, who are attempting to make a determination of which road they should take. Since early in my term, our efforts in space have been under review. With the advice of the Vice President, who is Chairman of the National Space Council, we have examined where we are strong and where we are not, where we may succeed and where we may not. Now it is time to take longer strides–time for a great new American enterprise–time for this nation to take a clearly leading role in space achievement, which in many ways may hold the key to our future on earth.

I believe we possess all the resources and talents necessary. But the facts of the matter are that we have never made the national decisions or marshalled the national resources required for such leadership. We have never specified long-range goals on an urgent time schedule, or managed our resources and our time so as to insure their fulfillment.

Recognizing the head start obtained by the Soviets with their large rocket engines, which gives them many months of leadtime, and recognizing the likelihood that they will exploit this lead for some time to come in still more impressive successes, we nevertheless are required to make new efforts on our own. For while we cannot guarantee that we shall one day be first, we can guarantee that any failure to make this effort will make us last. We take an additional risk by making it in full view of the world, but as shown by the feat of astronaut Shepard, this very risk enhances our stature when we are successful. But this is not merely a race. Space is open to us now; and our eagerness to share its meaning is not governed by the efforts of others. We go into space because whatever mankind must undertake, free men must fully share.

I therefore ask the Congress, above and beyond the increases I have earlier requested for space activities, to provide the funds which are needed to meet the following national goals:

First, I believe that this nation should commit itself to achieving the goal, before this decade is out, of landing a man on the moon and returning him safely to the earth. No single space project in this period will be more impressive to mankind, or more important for the long-range exploration of space; and none will be so difficult or expensive to accomplish. We propose to accelerate the development of the appropriate lunar space craft. We propose to develop alternate liquid and solid fuel boosters, much larger than any now being developed, until certain which is superior. We propose additional funds for other engine development and for unmanned explorations–explorations which are particularly important for one purpose which this nation will never overlook: the survival of the man who first makes this daring flight. But in a very real sense, it will not be one man going to the moon–if we make this judgment affirmatively, it will be an entire nation. For all of us must work to put him there.

Secondly, an additional 23 million dollars, together with 7 million dollars already available, will accelerate development of the Rover nuclear rocket. This gives promise of some day providing a means for even more exciting and ambitious exploration of space, perhaps beyond the moon, perhaps to the very end of the solar system itself.

Third, an additional 50 million dollars will make the most of our present leadership, by accelerating the use of space satellites for world-wide communications.

Fourth, an additional 75 million dollars–of which 53 million dollars is for the Weather Bureau–will help give us at the earliest possible time a satellite system for world-wide weather observation.

Let it be clear–and this is a judgment which the Members of the Congress must finally make–let it be clear that I am asking the Congress and the country to accept a firm commitment to a new course of action, a course which will last for many years and carry very heavy costs: 531 million dollars in fiscal ’62–an estimated seven to nine billion dollars additional over the next five years. If we are to go only half way, or reduce our sights in the face of difficulty, in my judgment it would be better not to go at all.

Now this is a choice which this country must make, and I am confident that under the leadership of the Space Committees of the Congress, and the Appropriating Committees, that you will consider the matter carefully.

It is a most important decision that we make as a nation. But all of you have lived through the last four years and have seen the significance of space and the adventures in space, and no one can predict with certainty what the ultimate meaning will be of mastery of space.

I believe we should go to the moon. But I think every citizen of this country as well as the Members of the Congress should consider the matter carefully in making their judgment, to which we have given attention over many weeks and months, because it is a heavy burden, and there is no sense in agreeing or desiring that the United States take an affirmative position in outer space, unless we are prepared to do the work and bear the burdens to make it successful. If we are not, we should decide today and this year.

This decision demands a major national commitment of scientific and technical manpower, materiel and facilities, and the possibility of their diversion from other important activities where they are already thinly spread. It means a degree of dedication, organization and discipline which have not always characterized our research and development efforts. It means we cannot afford undue work stoppages, inflated costs of material or talent, wasteful interagency rivalries, or a high turnover of key personnel.

New objectives and new money cannot solve these problems. They could in fact, aggravate them further–unless every scientist, every engineer, every serviceman, every technician, contractor, and civil servant gives his personal pledge that this nation will move forward, with the full speed of freedom, in the exciting adventure of space.

And the rest, as we have heard so often, is history: the quest for the Moon had begun.

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Remembering ENDEAVOUR … plus, the First Martian Impact

While the Space Shuttle Endeavour is in orbit on its final flight, it seems fitting that we remember that 15 years ago today — May 19, 1996 — Endeavour launched from the Kennedy Space Center on another mission.


(The Inflatable Antenna Experiment, after deployment. NASA image.)

Mission STS-77 carried U.S. astronauts John H. Casper, Curtis L. Brown, Daniel W. Bursch, Mario Runco, Jr., and Andrew S. W. Thomas, and Canadian astronaut Marc Garneau. The astronauts conducted a variety of experiments, including deploying the free-flying Inflatable Antenna Experiment, which at its full size was as big as a tennis court.

Here’s wishing the best to the current crew of Endeavour as they carry out their mission to the International Space Station.

Also in today’s space history, 40 years ago the Mars-2 spacecraft launched from the Baikonur Cosmodrome. On its approach to Mars in November 1971, it released a lander that “entered the Martian atmosphere at roughly 6.0 km/s at a steeper angle than planned” and crashed: the first human-built article to reach the surface of Mars.

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