Chris Gainor's Space
Tuesday, 27 May 2025
Book Review: A City on Mars: Can We Settle Space, Should We Settle Space, and Have We Really Thought This Through?
Friday, 19 April 2024
The Total Solar Eclipse of April 8, 2024
The millions of people who saw a total solar eclipse for the first time on April 8, 2024, now know about the power and magnificence of this celestial spectacle.
The April eclipse was the second of two total solar eclipses that were visible in North America in recent years, the first being the eclipse of August 21, 2017, that crossed the United States. Those two eclipses ended a long draught of total solar eclipses in North America that began in February, 1979. Both once seemed part of a distant future. Now eclipse chasers will have to travel to other parts of the world if they don’t want to wait for the next eclipse in North America, which won’t happen until 2044.
I saw the 1979 eclipse in Manitoba and the 2017 eclipse in Oregon, and I have written about them elsewhere in this blog. After 2017, I faced a difficult decision: where should I go to see the 2024 eclipse? The decision wasn’t simple because of the path of this eclipse and the fact that April weather is more problematical than the August weather we dealt with in 2017.
The narrow path of this year’s total eclipse first touched land in Mexico near Mazatlan and headed northeast through the U.S. starting in Texas and across several states, including Arkansas, Illinois, Indiana, Ohio, New York, Vermont and Maine. The eclipse’s path also included parts of Canada, including parts of southern Ontario, Quebec, New Brunswick, Prince Edward Island and Newfoundland. Totality passed south of Toronto but was visible in parts of Montreal and in other centres such as Hamilton, Kingston, Sherbrooke, Fredericton and Gander. Most of the rest of the continent got a partial solar eclipse.
The weather on April 8 was more likely to be favourable in Mexico and Texas than elsewhere. Hotel bookings and transportation in those areas would be expensive and complicated. The odds of good weather in the Canadian portion of the eclipse on April 8 were less than 50-50. Each of the past few years on April 8, I checked the weather along the eclipse path, and most years in Canada it was cloudy.
In part because of the pandemic, I didn’t make arrangements for the eclipse years in advance as I had done for the 2017 eclipse. As 2024 dawned, I concluded it was too late to arrange a trip to Mexico or Texas for a reasonable price. I know many people in Toronto, but I felt that too many people chasing the eclipse in Hamilton and points south might complicate things. So I decided to go to Windsor, Ontario, just outside the path of totality. We have relatives there, and it would be relatively easy to cross the border there to chase the eclipse in Ohio if necessary. But it was still a big gamble, and I made sure I had other things to do to justify the trip.
I didn’t get carried away with long range forecasts for eclipse day since I had already made my plans. About a week before the eclipse, I began to see social media posts from my friend Alan Dyer, who has literally written the book on photographing solar eclipses. For this master of astrophotography, failure was not an option when it came to choosing a suitable place to see and photograph the 2024 eclipse. Setting out from his home in Alberta, Alan found that contrary to expectations, the weather in Texas was not promising. He decided to drive in the general direction of eastern Canada.
As the eclipse day got closer, weather predictions called for clouds in southern Ontario, and when I arrived in Toronto on April 4, I was greeted with cold, cloudy and rainy weather. Alan drove on to Quebec, where prospects for clear skies looked better. Two days before the eclipse as I made my way to Windsor, the skies cleared. Things were looking more promising, but clouds were still predicted for April 8.
The night before, the prediction was still more promising for Ohio than the Windsor area, and Ohio locations were closer to the centreline of the eclipse, which promised a longer period of totality. I prepared to cross the border.
April 8 dawned in Windsor with blue skies. The forecast still called for clouds in the mid afternoon, when the eclipse was due to take place. The forecasts for Ohio called for longer periods of cloudiness in the afternoon, which I feared meant thicker clouds, and so I decided to stay in Canada.
Accompanied by my wife, along with her sister and her husband, we drove south from Windsor through Amherstberg into the path of totality. Many eclipse chasers in the area were already arriving in Point Pelee Park, which was closer to the centreline but involved very limited access, so I thought we might set up in Leamington. Before we got there, we found a great spot to watch the eclipse at Colchester Harbour and Beach. The Windsor Centre of the Royal Astronomical Society of Canada (RASC) had set up tents and telescopes there, a restaurant, coffee shop and other facilities were nearby, and scores of people were already settling in to watch the eclipse over Lake Erie.
Looking south across Lake Erie, we saw a bank of clouds that everyone hoped would stay where it was. But true to the prediction, the clouds moved our way and covered the sun as the partial phase of the eclipse began a little before 1 p.m. Fortunately, the clouds weren’t very thick and we could follow the Moon as it covered the face of the Sun, a view assisted by our eclipse glasses or the filtered ‘eclipse telescope’ I brought along.
A half hour ahead of totality, the temperature in the area began to noticeably cool. I recall the temperature reduction in the 2017 eclipse cooling closer to the time of totality, but that was in the warmer weather of August.
Finally, at about 3:12 p.m., totality began. We were amongst the first to see totality that day from Canadian soil. The transition from needing eclipse glasses to full totality with the naked eye seemed to be prolonged to me, but finally we got our 90 seconds of totality and dark skies. Venus was plainly visible through the thin layer of cloud, but I don’t recall seeing Jupiter or any other celestial object. The incandescent but not overpowering glow of the Sun’s corona took centre stage. No photo has ever done justice to that sight.
In the moments leading into and out of totality, the lighting of the area took on a strange hue. During totality, my viewpoint overlooking Lake Erie allowed me to see the approaching “sunset” to the west and the receding “sunrise” to the east. During this time, I took a couple of photos of the sun and of the light effects around the horizon with my iPhone, and I set up my iPad to film totality. I wanted to spend most of totality enjoying the view rather than spending a lot of time messing with cameras.
All too soon, totality was over, and soon people started to leave. We remained for most of the rest of the eclipse to savour the incredible spectacle. By the time we drove back to Windsor, all the clouds had disappeared. So had the crowds, and as a result we encountered no traffic jams.
The hours and days that followed seemed to be a giant debrief on this event. Who got a good view of the eclipse? Who got skunked by the weather? Those were the major topics of conversation with everyone I met. The evening of April 8 I attended a meeting of the Victoria Centre of the RASC on Zoom, and a few days later I attended a meeting of the RASC Mississauga Centre in person, both full of eclipse talk.
To sum things up, those in or near Mazatlan, some on cruise ships, enjoyed clear views, and the weather in Texas was not great but allowed brief glimpses of the Moon blocking the Sun. Most people who saw the eclipse from both the north and south sides of Lake Erie got a good view of the eclipse through thin clouds. Those who viewed the eclipse from Niagara Falls and eastern Ontario had to deal with thicker clouds, which meant fleeting views of totality or no view at all. The weather was better in Montreal, and those in Sherbrooke and the surrounding area enjoyed clear skies. I heard reports of good weather in New Brunswick and not so good weather in Newfoundland. Alan Dyer got his photos. Only a few people I know missed all of totality.
So the viewing conditions for the 2024 total solar eclipse turned out to be less than perfect but better than most of us could hope for. My friends who had never seen a total solar eclipse were most impressed by the sight. Many found that the eclipse stirred their emotions.
Many astronomical events don’t impress non-astronomers, and that is even truer today when some events such as “Supermoons” are overhyped by people in the media or on the internet. But total solar eclipses never fail to impress, as they should, since they are so rare and so amazing.
Now the question arises - when is the next one? August 12, 2026, in Greenland, Iceland and Spain. In North America, the wait will go on until August 23, 2044. How long will my wait go on? That's a decision for another time.
Friday, 10 November 2023
Asteroid (20041) Gainor
Wednesday, 2 August 2023
Canada World Youth, 50 years later
Tuesday, 18 July 2023
Peter Armitage, NASA Engineer worked at Avro Canada 1929-2023
Thursday, 6 April 2023
Artemis II Is Far From NASA's First Lunar Flight With Canadian Content
Officially, Canadian astronaut Jeremy Hansen is part of the crew of the upcoming Artemis II flight around the Moon thanks to an agreement between NASA and the Canadian Space Agency which will see Canada build Canadarm 3 for the Lunar Gateway space station that is part of the Artemis program.
I also like to think of Hansen’s participation in Artemis II as being a belated recognition of Canada’s role in helping NASA get the Apollo astronauts to the Moon more than half a century ago.
While Canada did not play a formal part in Apollo, the Canadian government’s decision in 1959 to cancel the CF-105 Avro Arrow jet interceptor program led to NASA hiring 31 of Avro’s top engineers to join Project Mercury, which put the first U.S. astronauts into space in the early 1960s. The Avro engineers also played prominent roles in the Gemini spaceflights that followed Mercury, and Apollo itself. Some of the former Avro engineers went on to work in the Space Shuttle program and one worked on the International Space Station. Seventeen of the engineers had come to Avro Canada from the United Kingdom, one was from Poland, and 13 were Canadian.
Two of the most important members of the Avro group came from Canada. James A. Chamberlin had been born in Kamloops B.C. and raised in Toronto. When the Arrow was cancelled in 1959, he was the 43-year-old chief of technical design at Avro Canada, and once at NASA, he was named head of engineering for the Mercury spacecraft. Not long after President John F. Kennedy challenged NASA to send astronauts to the Moon, Chamberlin began designing a new two-man spacecraft called Gemini that would prepare astronauts and flight controllers for the challenges of Apollo’s flights to the Moon.
By the time Gemini got its official start in late 1961, NASA officials were engaged in a heated debate about how Apollo would get to the Moon. There were three concepts, starting with a direct flight in a single spacecraft to the lunar surface and back to Earth. A second proposal involved launching the spacecraft in parts using two or more Saturn V rockets, assembling the parts in Earth orbit, and then heading for the Moon. A third concept, called lunar orbit rendezvous, involved launching two spacecraft atop a single Saturn V rocket. The crew would spend most of the trip in a mother ship, and a second smaller craft would descend from the first craft in lunar orbit to the Moon’s surface, and then return the astronauts to the mother ship for the return trip home.
At first, most NASA officials charged with the lunar flight favoured a direct flight, in part because it would avoid the complexities of rendezvous and docking in lunar orbit or of assembling a spacecraft in Earth orbit. An engineer from another part of NASA named John C. Houbolt, campaigned within the agency for lunar orbit rendezvous, which he had concluded would save a massive amount of weight, fuel and cost because most of the spacecraft, such as the Earth landing system, would not have to be lowered to the lunar surface and then launched back to Earth. One of the first people to agree with Houbolt was Chamberlin, who quickly drew up a daring plan to fly a Gemini spacecraft to lunar orbit, along with what he called a “bug” that would carry a single astronaut to the surface and back to the Gemini. While NASA rejected Chamberlin’s idea of flying Gemini to the Moon, his proposal helped change minds at the space agency to favour flying Apollo to the Moon with lunar orbit rendezvous.
Another Canadian from Avro, Owen E. Maynard, a native of Sarnia, Ontario, had been involved in the Apollo program from its beginning in 1960. Maynard quickly began designing a two-man craft that became known as the lunar module or LM. Along with his drawings, Maynard travelled with other Apollo experts to NASA installations to sell lunar orbit rendezvous to the whole agency. NASA officially opted for lunar orbit rendezvous in July 1962, and in November, Grumman Aircraft won the contract to build the lunar module.
Maynard worked with Grumman’s engineering team under Tom Kelly on the LM, and in 1964 he was promoted to head the systems engineering division, where he was responsible for making sure that all of the components of the Apollo spacecraft worked in concert with the Saturn V rocket and the systems on the ground. Two years later, Maynard was moved to the top job in Apollo mission operations. There he was responsible for designing missions and for setting the sequence of Apollo test flights that led to the first lunar landing attempt on Apollo 11.
The fire that killed Apollo 1 astronauts Virgil Grissom, Edward White and Roger Chaffee during a launch pad test in 1967 led to many changes in Apollo, including a management shakeup that saw Maynard returned to his previous job as head of systems engineering. He played a key role in the missions that led to the lunar landing, notably Apollo 8, which orbited the Moon 10 times in December 1968 with three astronauts on board. During the flight of Apollo 11, Maynard was one of the managers working in the Mission Control Center in Houston. In the time leading up to Apollo 11, Chamberlin served as a trouble shooter for NASA management.
Several other engineers from Avro Canada also made their mark on Apollo. Bryan Erb, an Albertan, helped develop the Apollo command module’s heat shield and then managed the laboratory that handled the returned lunar samples. When the Apollo 11 crew returned to Earth, the first person who greeted them on board the recovery helicopter was a Canadian physician, Dr. William Carpentier, who joined NASA after an upbringing in Alberta and B.C. Two natives of Saskatchewan worked on spacecraft systems – Leonard Packham on communications, and Richard Carley on guidance and navigation. Robert Vale of Toronto helped develop the experiment packages that the Apollo astronauts deployed on the lunar surface. British engineers who worked at Avro Canada had leading roles in Apollo, including John Hodge, Rod Rose, Peter Armitage, Morris Jenkins and Dennis Fielder.
Apollo 11 and five other Apollo missions took astronauts to the surface of the Moon. Each lunar module descent stage and its landing gear included four legs and struts that extended and supported the legs. Most of the landing gear, except for the bottom parts of the legs and the landing pads, were precision made at Héroux Machine Parts Limited (now Héroux-Devtek) in Longueuil, Quebec.
I had the privilege of meeting most of the Avro engineers who worked for NASA while writing my book, Arrows to the Moon: Avro’s Engineers and the Space Race (Apogee Books: 2001).
By the time Apollo was wrapping up in 1972, NASA was negotiating with the Canadian government to make Canada a formal partner in the Space Shuttle program by contributing the Space Shuttle Remote Manipulator System or Canadarm to the shuttle. In 1983, at NASA’s invitation, Canada selected its first astronauts and Marc Garneau became the first Canadian to fly in space in 1984.
Now Jeremy Hansen stands to be the first Canadian to fly around the Moon, following in the footsteps of other Canadians who worked in the design suites, meeting rooms and control centres of Apollo, and his Canadian astronaut colleagues who flew on board the Space Shuttle and the International Space Station.
Canadian Astronaut Jeremy Hansen (NASA).