Category Archives: History

The Apollo Guidance Computer

In researching my previous post, I talked about the delta-vs planned for Apollo 8. In the Apollo Flight Journal, there’s commentary breaking down the items that were entered for each maneuver. They were all handled by the Apollo Guidance Computer. … Continue reading

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Blast from the Past

I’ve rediscovered coding, in some of its new guises like Scratch. People who click here will get a blast from the video game past.

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Most Famous Photo

Apollo 8′s Earthrise picture has been cited many times as one of the most important photos ever taken. In celebration of its anniversary NASA put together this description of how it happened, talked about in this article. They seem to … Continue reading

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More Early History of Meteorites

Some of the first iron people worked with was from meteorites, used to make jewelry.

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First Photo from the Moon…a Dud?

Well, it’s the first Moon Day I’ve seen pass with some notice on Facebook. Don’t really know if I just added some new friends who comment on it, if more people thought of it (maybe due to Neil Armstrong’s passing?), … Continue reading

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More Younger Dryas Proof?

As someone who’s followed planetary defense for a while and believes it’s important, I’m sensitive to any argument that makes it look more important. There are some people who believe some form of meteor (either a glacial impactor or airburst) … Continue reading

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A Week of sad Anniversaries

Through a bizarre twist, all three of NASA’s accidents causing loss of life to astronauts happened within 7 calendar days of each other. Apollo 1 in 1967, Challenger in 1986, and Columbia in 2003. It was the loss of Columbia … Continue reading

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Mission (more than) Accomplished

The fate of Landsat 5 has been uncertain for a few months. Several recent component failures changed the risk/reward balance for keeping it going. USGS just put out a press release saying they’re going to retire the old girl. She … Continue reading

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Bittersweet Anniversary

Forty years ago today, our last (most recent? last government-sponsored?) exploration of another world began.

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Mars Exploration Summary

Getting ready for a talk about Mars, I came across this image, which shows all the missions attempted to Mars so far. I added some detail, showing the ones that failed (X), partially failed (half of an X), are longer … Continue reading

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