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Cake day: 2023年9月23日

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  • All of the Apollo missions, actually, including 13. In fact, Apollo 13 marks the farthest distance human beings have ever been from Earth because of the modified trajectory they had to use in order to get back to Earth faster with their damaged spacecraft.

    But Apollo 13 also is the only moon mission where there was never a single individual alone in the ship when it went dark behind the moon. (On all other missions, the Command Module Pilot remained in the ship while the other two landed on the surface, so for the duration of that time, they were doing solo orbits that took them through the silent shadow of the moon.



  • Yes, Massachusetts. I have a dual fuel heat pump with natural gas backup installed in 2020, so it’s a newer system. And I have one heat pump mini split in the least energy efficient, but most used room in my house (large, high ceilings, exterior walls on three sides, and a skylight).

    The first couple of years I noticed when it got just below freezing, the central heat pump seemed to struggle to keep up. Then this year I replaced my windows and got new wall insulation in both of the main bedrooms and bathrooms (previous insulation was original from the 1960s and shredded to bits with huge gaps.)

    After those improvements, I’ve been running my heat pump down to 20⁰F/-7⁰C so far without any issues at all. I’m excited to see how cold we can get and this system still keep up. I am still supplementing my one large room with the mini split, but that’s mostly because all my plants are in here, so I keep this room warmer than 68⁰F/20⁰C.