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.
We haven’t really gone “a-viking” to another world (yet), but 35 years ago today — August 20, 1975 — we did launch the Viking-1 mission from Cape Canaveral. Viking-2 was launched a few weeks later, on September 9th.
(Viking-1 image of Chryse Planitia, looking northwest over the lander’s radioisotope thermal generator (RTG) cover. NASA image, August 30, 1976.)
Launched by Titan-IIIE boosters, the Viking missions each consisted of a lander and an orbiter. In addition to cameras that returned stunning images of the Martian landscape, the Viking landers carried instruments to study the Martian surface in terms of biology, chemical composition, meteorology, seismology, and other properties.
Viking-1 entered Mars orbit on June 19, 1976. The orbiter and lander orbited Mars together for a month while the orbiter took images which NASA used to select a landing site. The lander and orbiter separated and the lander descended to the surface on July 20th.
Other than the failure of the seismometer and difficulty with a stuck locking pin on the sampler arm, all of the experiments on the Viking-1 lander performed well. The lander “was named the Thomas Mutch Memorial Station in January 1982 in honor of the leader of the Viking imaging team.” Contact with Viking-1 was lost on November 13, 1982.
Fifty years ago today — August 12, 1960 — a Thor-Delta rocket lifted off from Cape Canaveral* carrying the Echo-1 satellite.
(Echo-1 satellite, fully inflated, inside a Navy hangar in Weeksville, NC. NASA image from Wikimedia Commons.)
Echo-1 was a Mylar balloon 100 feet in diameter which reflected radio waves aimed at it. Its only transmitter was for telemetry: for communications, it was a passive reflector. One of the first signals reflected by Echo-1 was a recorded radio message from President Eisenhower.
The spacecraft should probably be known as Echo-1A, since the original Echo-1 was lost when its launch vehicle failed the previous May, but the Echo-1 name has endured.
Fast forward forty-five years …
Five years ago today, the Mars Reconnaissance Orbiter launched from Cape Canaveral aboard an Atlas-5 rocket. It has been in orbit around Mars since March 2006, sending back detailed images of the red planet’s surface and sub-surface features.
*One source gave the launch site as Vandenberg AFB, which was the launch site for Echo-2 in 1964.
Forty-five years ago today — Bastille Day 1965 — the Mariner-4 spacecraft took the first close-up photographs of Mars.
(First close-up image of Mars, from Mariner-4. NASA image.)
Mariner-4 had been launched from Cape Canaveral on November 28, 1964 (for which, see this space history installment).
From the National Space Science Data Center page linked above,
After 7.5 months of flight involving one midcourse maneuver on 5 December 1964, the spacecraft flew by Mars on July 14 and 15, 1965. Planetary science mode was turned on at 15:41:49 UT on 14 July. The camera sequence started at 00:18:36 UT on July 15 (7:18:49 p.m. EST on July 14) and 21 pictures plus 21 lines of a 22nd picture were taken [and] stored in the onboard tape recorder. At 02:19:11 UT Mariner 4 passed behind Mars as seen from Earth and the radio signal ceased. The signal was reacquired at 03:13:04 UT when the spacecraft reappeared. Cruise mode was then re-established. Transmission of the taped images to Earth began about 8.5 hours after signal reacquisition and continued until 3 August. All images were transmitted twice to insure no data was missing or corrupt.
(First image of craters on the surface of Mars, from Mariner-4. NASA image.)
More Mariner-4 images are available on this NASA page.
(Cross-posted from the Space Warfare Forum.)
(Earthrise from lunar orbit. NASA image. Click to enlarge.)
Yesterday the White House released the new National Space Policy of the U.S.A., available in as a PDF file at the noted link.
On a quick read-through, I didn’t find anything to which I could strongly object. Even the much-anticipated (by the aerospace industry) relaxation of export restrictions did not come across as the drastic change that had been hyped. I might disagree with the conciliatory tone, which seems almost an apology for rather than an affirmation of the country’s efforts to lead the way in space, but that seems to be the norm for the current Administration.
I don’t know that I agree with the focus on an asteroid mission and then a Mars mission (i.e., a Mars orbital mission) to the exclusion of a return to the Moon, since the Moon would seem to be the logical base of operations for such excursions. But maybe that’s the point: to reach those other objectives assumes first establishing a presence on the Moon. I hope that’s it.
A Difficult Space Anniversary: Mars Mission Failure
Ten years ago today — September 23, 1999 — the Mars Climate Orbiter spacecraft fired its main engine to go into orbit around Mars. The maneuver was unsuccessful, however, due to a navigation error. The spacecraft was lost.
The “navigation error” — i.e., the root cause of the failure — was contention between English units and metric units in the ground-based navigation software. It was a glitch in the program, and could be considered a systems engineering failure or a configuration management failure in that the error crept in because two different teams — the Colorado-based spacecraft team and the California-based mission navigation team — used two different measurement systems.
The spacecraft had been launched on a Delta-II rocket from Cape Canaveral Air Force Station on December 11, 1998.
While I’m at it, and for no better reason than that I’m pleased with the work I did on it, here’s a link to the newly-updated North Carolina Aerospace Initiative web site.