Simon Porter

@AscendingNode

Astrophysicist on the mission to Pluto, 2014 MU69, and beyond. Research Scientist at . Space, plane, and train dork. Minor planet 11467.

Boulder/Lafayette, CO, 1 AU
Vrijeme pridruživanja: kolovoz 2013.

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  1. Prikvačeni tweet
    25. sij 2018.

    Orbit is not a place, it's a state vector of being.

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  2. prije 2 sata

    Intelsat has connected more people over the past 56 years than Starlink ever will. But there's a reason it was a government-funded entity for most of that.

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  3. prije 2 sata

    But I was told communication satellites are guaranteed money makers

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  4. proslijedio/la je Tweet
    prije 3 sata

    Reuters just deleted this tweet but lmaoooooo I love this

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  5. proslijedio/la je Tweet
    prije 3 sata

    A few of the session names are references to movies, so chose six of them to make as movie posters/music covers/etc. My first one is the Tuesday afternoon session ' - The Undiscovered Country', which I made after (of course) VI 🪐😄

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  6. proslijedio/la je Tweet
    prije 3 sata

    One problem with medieval towns is that they can be tricky for public transport. In 1895, engineers charged with building a tramway branch thru St. Laurent-du-Pont decided that the obvious solution was to drive right thru a corner plot - and neatly construct a building above it.

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  7. prije 3 sata

    Rame 61 is already preserved at Cite du Train in Mulhouse

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  8. prije 3 sata
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  9. prije 3 sata

    Enjoy well-earned retirement, Patrick, the first (electric) TGV.

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  10. prije 6 sati

    The red section is the test track that they have already built and are running tests on. The close yellow dashes show the Tokyo-Nagoya line under construction, and the loose dashes are the extension to Osaka. When complete, the time to go from Tokyo to Osaka will be 67 minutes.

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  11. prije 6 sati

    The Chūō Shinkansen (中央新幹線) has been under development since 1972. It holds the land speed record for a passenger vehicle of 603 kph, and the line between Shinagawa Station in Tokyo and Nagoya is under construction, to open in 2027. 80% of the route is underground.

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  12. prije 7 sati

    It still greatly bemuses me that people somehow think that an underground high-speed maglev is somehow the invention of an American billionaire, when people around the world have been working on it since the 1960s. And the Japanese will have a 500 kph system in service by 2027

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  13. proslijedio/la je Tweet
    prije 7 sati

    Sometimes the vapor cone is not awesome enough and it turns iridescent

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  14. prije 7 sati

    The face of FDR, frozen in time (and to the sidewalk)

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  15. proslijedio/la je Tweet
    prije 18 sati

    And because I just saw a certain space advocate person say it, Artemis isn't bad because the president wants it. Artemis is bad because Artemis is bad. As structured it ties the agency to a company with very serious quality control issues and is way too expensive.

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  16. 4. velj

    In case you're wondering what the cost to launch a NASA spacecraft on a Falcon 9 is.

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  17. proslijedio/la je Tweet
    4. velj

    Wonder what it would be like to stand next to the Psyche spacecraft? 🤔 Check out this image, which shows what the average human looks like standing next to the spacecraft bus! 🤯

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  18. proslijedio/la je Tweet
    4. velj

    The Apollo Martin 410 was a curious lunar return and reentry craft design from a 1961 study has a section in Project MALLAR () showing how it used a lifting body, parachute, landing rocket and *legs* for a soft 6g-max landing

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  19. proslijedio/la je Tweet
    4. velj

    this NASA illustration of an old satellite is a whole mood

    cartoon drawing of an old satellite with a beard
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  20. proslijedio/la je Tweet
    4. velj

    If you have any interest in using data obtained by the Mars Exploration Rovers (MER), please fill out this survey: They want to hear from , non-martian scientists, plus high school teachers, undergrads, and anyone who might use the data.

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  21. proslijedio/la je Tweet

    How far does photography reach back in time? This 1852 photograph shows Conrad Hayer at the age of 103, the (verifiably) earliest-born human ever to have been photographed. He was born in 1749, shortly after the Battle of Culloden and only 83 years after The Great Fire of London.

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