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Ed Lu
1,360 posts
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Ed Lu
@astroEdLu
Finding a million asteroids!
Pale Blue Dot
b612foundation.org
Joined January 2012
73
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11.3K
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  • user avatar
    Ed Lu
    @astroEdLu
    Mar 19, 2025
    The hardest part about recovering from many months in space isn't the physical part (that is relatively easy). It is the administrative and paperwork things! getting my bills paid, safety inspection on car (I got a ticket), lawn cleaned up etc.
    470K
  • user avatar
    Ed Lu
    @astroEdLu
    Mar 18, 2025
    I am an astronaut stranded on Earth!
    247K
  • user avatar
    Ed Lu
    @astroEdLu
    Mar 20, 2025
    Replying to @charlesbaron
    It was easier to just pay it then argue about it!
    31K
  • user avatar
    Ed Lu
    @astroEdLu
    Feb 7, 2025
    @b612foundation has taken the orbit and uncertainty of asteroid 2024YR4, sampled 10K trajectories from the current uncertainty, and propagated them forward. 2.3% of those hit the Earth on Dec.22, 2032. Here is where they hit.
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    3.8M
  • user avatar
    Ed Lu
    @astroEdLu
    Jul 31, 2025
    Could you imagine taking a picture like this?
    user avatar
    National Air and Space Museum
    @airandspace
    Jul 31, 2025
    Apollo 15's lunar module Falcon pictured on the Moon, which landed #OTD in 1971.
    Apollo lunar module on the moon's surface with detailed tracks and footprints in the foreground, surrounded by a harsh, cratered landscape under a dark sky with a bright sun.
    12K
  • user avatar
    Ed Lu
    @astroEdLu
    Oct 13, 2020
    Replying to @LeoLabs_Space
    This is a potentially serious event. It is between 2 large objects and at high altitude, 991km. If there is a collision there will be lots of debris which will remain in orbit for a long time.
  • user avatar
    Ed Lu
    @astroEdLu
    Jul 27, 2025
    I was searching for some images from my old space missions using Google image search, and many if not most results were stock images charging money for downloads. These images were paid for by @nasa and are public domain! @Google please address this issue!
    14K
  • user avatar
    Ed Lu
    @astroEdLu
    Feb 7, 2025
    Replying to @astroEdLu and @b612foundation
    We calculated our own current state of YR4 using the open source FindOrb package, and also used the @NASA and @esa state vectors. They all give similar results.
    83K
  • user avatar
    Ed Lu
    @astroEdLu
    Aug 25, 2025
    I think this upcoming launch of @SpaceX Starship is incredibly important as the ultimate success of the Starship program will change our future in space.
    14K
  • user avatar
    Ed Lu
    @astroEdLu
    Aug 8, 2024
    A Chinese rocket launched 18 satellites for the G60 constellation and broke up in orbit releasing over 700 debris fragments. Unfortunately this debris over the next few years will be making its way downwards through the orbits of ISS and Starlink. @LeoLabs_Space
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    LeoLabs
    @LeoLabs_Space
    Aug 8, 2024
    🚨 We’re actively monitoring and analyzing the breakup event in #LEO involving a Chinese rocket body, CZ-6A. Our radar data indicates this event occurred on 6 August at ~20:10 UTC at ~810 km. It resulted in at least 700 debris fragments and potentially more than 900.
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    65K
  • user avatar
    Ed Lu
    @astroEdLu
    Aug 8, 2025
    Replying to @DJSnM
    The procedures didn't have you set a timer, but often when waiting for a step we would set a timer then attend to something else.
    7.8K
  • user avatar
    Ed Lu
    @astroEdLu
    Sep 26, 2022
    So the name of the game is to find asteroids decades before they hit the Earth. This makes deflecting them relatively "easy".
  • user avatar
    Ed Lu
    @astroEdLu
    Jul 21, 2025
    Years ago I flew into Oshkosh in a NASA T38 and ATC was unable to contact an arriving U-2. So I got to be the relay comm to the U-2 giving him clearance to land. Good times!
    user avatar
    EAA
    @EAA
    Jul 20, 2025
    It’s a beautiful day for a U-2 arrival. 😉 (Especially when captured from above.) Dragonlady has made it to Oshkosh! #OSH25
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    00:00
    25K
  • user avatar
    Ed Lu
    @astroEdLu
    Jan 29, 2024
    Did you know the rate of spacecraft launches is growing as fast as computing power (Moore's Law)? Both double about every 2 years. The implications for space are huge if this continues. A Moore’s Law for space - SpaceNews
    26K

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