Tag Archives: apollo 12

[May 31, 1970] A Compulsion to read (June 1970 Analog)

photo of a man with glasses and curly, long, brown hair, and a beard and mustache
by Gideon Marcus

Monster-eyed bug

Last week, NASA released the news that the Apollo 12 astronauts brought back a fourth astronaut at the end of their flight last November.  A common human germ, Streptococcus mitis to be exact, was found to have hitched a ride back with Surveyor 3's camera, after surviving some 32 months in the harsh environment of the lunar surface.

Streptococcus mitis under a microscope.
Streptococcus mitis (c) Ansel Oommen

Frederick J. Mitchell, a scientist at the Lunar Receiving Laboratory, stated that it was "notable, but not unexpected" that a bacterium might make and survive the trip to the Moon as a stowaway on a terrestrial spacecraft.  Thanks to insufficient clean-room procedures, it was probably deposited on Surveyor's camera when the camera's shroud was removed for repairs and then replaced, and then launched with the soft-lander in 1967.  The high vacuum of space actually freeze-dried the bug, allowing it to remain viable indefinitely. 

The Surveyor 3 camera on a black background.
the Surveyor 3 camera

Given that we were unable to prevent terrestrial life forms from contaminating our nearest celestial companion, one has to wonder if we will taint Mars or Venus when we launch probes to the surfaces of those planets in the next decade.  It's a bit like Schrödinger's equations—just as you affect what you see by looking at it, you can't investigate a planet without risking an alteration of said planet.  It may well be that humans will land on Mars in the 1980s to find icy ponds rimed with Earth bacteria.

It's enough to make you want to leave well enough alone!

Bug-eyed caterpillars

Cover of analog  Science Fiction, June 1970 featuring a futuristic barge on a craggy ocean shore. The featured title is 'STAR LIGHT' by Hal Clement
by Kelly Freas

On the other hand, this month's Analog is quite good, and well worth your time.  Let's take a look:

Continue reading [May 31, 1970] A Compulsion to read (June 1970 Analog)

[May 14, 1970 Another Perfect Emergency (Saving Apollo-13)

[New to the Journey?  Read this for a brief introduction!]

A black-and-white photo portrait of Kaye Dee. She is a white woman with long, straight dark hair worn down, looking at the camera with a smile.
by Kaye Dee

On 5 May, the Apollo-13 crew visited the Grumman Aircraft Engineering Corporation factory in Bethpage, New York, to thank the company for its lifesaving Lunar Module, without which the recent lunar mission would have ended in disaster.

Three men holding presentation gifts of a lunar module model mounted on a plaque. They are on a stage with a crowd behind themleft to right: Apollo-13 astronauts Haise, Swigert, and Lovell during their visit to Grumman's Bethpage plant

The Grumman team’s contribution to the successful outcome of the mission – understanding the full capabilities of the vehicle they had designed so that it could be pressed into service as the astronauts’ lifeboat – is just one example of the innovativeness and dedication of the many NASA support teams working behind the scenes in the Apollo programme.

Today, I want to tell another behind-the-scenes story, one that comes “straight from the horse’s mouth”, as I’ve interviewed many of the personnel involved – the crucial role played by NASA’s space tracking networks, in particular the Manned Space Flight Network (MSFN) in Australia, in saving Apollo-13. I hope it will give you some insight into the complex technical and logistical operations that were required to respond to the emergency, and a feel for the urgency with which everyone was operating.

Continue reading [May 14, 1970 Another Perfect Emergency (Saving Apollo-13)

[December 6, 1969] Here comes the Sun (and Moon) — Orbiting Solar Observatory, Apollo, ESRO, and Explorer 41!

[New to the Journey?  Read this for a brief introduction!]

photo of a man with glasses and curly, long, brown hair, and a beard and mustache
by Gideon Marcus

With the Apollo missions taking so much of our attention (there were four flights this year), it is understandable that unmanned missions and science have gotten short shrift.  I'm going to try to address this oversight now.

Far out!

Do you remember Pioneer 6 (launched Dec. 16, 1965) and Pioneer 7 (launched Aug. 17, 1966)?  They are deep space probes designed to observe the Sun from widely different vantage points.  In fact, we've been a bit remiss: since '66, two more identical Pioneers have gone up: Pioneer 8 (December 13, 1967) and Pioneer 9 (November 8, 1968).  A fifth and final Pioneer was launched August 27, 1969, but its carrier rocket exploded.  The loss of that one is pretty bad; whereas the others are all spread out fairly equidistantly around the Sun, more or less as far away from it as the Earth, Pioneer "E" was going to be put in an orbit that kept it close to Earth, where it would be used to give as much as a two-week warning of dangerous flare activity.

Nevertheless, NASA is blazing along with four satellites.  Indeed, thanks to the longevity and spread-out positions of Pioneers 6 and 7, they were able to perform an unique experiment.  On Nov. 6, the two satellites were 175 million miles apart on a common line with the Sun, and scientists observed the difference in behavior of solar wind particles due to their passage through space in opposite directions.  In a similar vein, on Dec. 2, when the spacecraft reached points on a common spiral line leading out from the Sun (the star rotates, so it flings out particles in a spiral rather than linear fashion), scientists measured different kinds of solar particles coming from the same events on the Sun.

We'll have to wait for the journals to publish any papers, but this is the kind of large-scale, long-term science made possible by the Pioneer probes!


Another cool example of Pioneer science

Continue reading [December 6, 1969] Here comes the Sun (and Moon) — Orbiting Solar Observatory, Apollo, ESRO, and Explorer 41!

[November 26, 1969] From the Earth to the Moon…and back (Apollo 12)

photo of Gideon Marcus, a man with glasses and curly, long, brown hair, and a beard and mustache
by Gideon Marcus

Just four months ago, men first set foot on the Moon, fulfilling a millennia-long dream of humanity as well as culminating a decade-long Space Race between the superpowers. And the question on everyone's lips: how do you top that?

It's important to remember that the flight of Apollo 11 was not the end, but only a beginning—just as John Glenn's orbital flight, Gus Grissom's mission in Gemini 3, Wally Schirra's in Apollo 7 were all beginnings. The Moon Port is open, and it is time to start the exploration of the cosmos in earnest.

Appropriately, the flight of Apollo 12 was planned to mark an incremental expansion upon the prior mission's success. Scheduled for a November 14 launch at 11:22AM Eastern time months in advance, the second lunar mission would include the following improvements:

  • Time spent on the Moon would be 32 hours, half again more than the 21 hours spent by Apollo 11.
  • There would be two Extravehicular Activities (EVAs) rather than one.
  • The astronauts would set up a series of experiments designed to operate for one year from the lunar surface.
  • The Lunar Module (LM) would execute a pinpoint landing at Site 7 in the Sea of Storms, as opposed to the less precise touchdown made by Eagle in July
  • As a result, the astronauts would be able to recover the TV camera from Surveyor 3, which had soft-landed on the Moon two years prior.
  • The Moonwalks would be televised in color this time.
  • After lunar exploration, Apollo 12 would spend an extra day in lunar orbit photographing future landing sites.

In all, Apollo 12 promised to be only slightly more ambitious than its predecessor, but how much more ambitious than a flight to the Moon do you need?

Continue reading [November 26, 1969] From the Earth to the Moon…and back (Apollo 12)