SpaceX and all the good space stuff

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  • mickeyrat
    mickeyrat Posts: 45,220
    Over 1,800 Starlink satellites are leaking radio signals – and they're drowning out the cosmos.

    Space should be silent, especially in the radio frequencies astronomers use to study the early universe. But that silence is being disrupted.

    Using a telescope array in the remote Australian desert, scientists detected more than 112,000 unintended radio emissions from 1,806 Starlink satellites. Some of the signals were 10,000 times stronger than the faint cosmic whispers researchers were trying to detect.

    The interference showed up in 2.4 million full-sky images, revealing a growing problem. Because these radio signals are unintentional, they fall outside current space regulations – a major blind spot as thousands more satellites head to orbit.

    Astronomers warn that without better shielding or smarter design, we could lose our ability to hear the cosmic dawn – the faint radio echoes of the first stars and galaxies ever formed.

    Read the study: 
     “The Growing Impact of Unintended Starlink Broadband Emission on Radio Astronomy in the SKA‑Low Frequency Range.” Astronomy & Astrophysics 11 June 2025
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  • Jason P
    Jason P Posts: 19,394
    Here are some pictures of the moon I took this morning ...



    Be Excellent To Each Other
    Party On, Dudes!
  • PJ_Soul
    PJ_Soul Vancouver, BC Posts: 50,910
    Holy crap! You must have a good camera, lol. 
    With all its sham, drudgery, and broken dreams, it is still a beautiful world. Be careful. Strive to be happy. ~ Desiderata
  • eeriepadave
    eeriepadave West Chester, PA Posts: 43,632
    PJ_Soul said:
    Holy crap! You must have a good camera, lol. 

    or good copy and pasting skills :wink:
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  • Jason P
    Jason P Posts: 19,394
    PJ_Soul said:
    Holy crap! You must have a good camera, lol. 
    Nikon P900 with a 83x optical zoom i bought a decade ago.   I can see the logos off of jets with it.  I think i paid $600.   I consider it my telescope.    
    Be Excellent To Each Other
    Party On, Dudes!
  • PJ_Soul
    PJ_Soul Vancouver, BC Posts: 50,910
    Jason P said:
    PJ_Soul said:
    Holy crap! You must have a good camera, lol. 
    Nikon P900 with a 83x optical zoom i bought a decade ago.   I can see the logos off of jets with it.  I think i paid $600.   I consider it my telescope.    

    That is fucking awesome  
    With all its sham, drudgery, and broken dreams, it is still a beautiful world. Be careful. Strive to be happy. ~ Desiderata
  • Jason P
    Jason P Posts: 19,394
    Comet Lemmon (C/2025 A6) will be visible to the naked eye until it November 11th in the evening and morning.  It already reached it's closet point to earth (0.71 AU ... 1 AU equals distance from the Earth to the Sun) on October 21st.  

    This excerpt from StarWalk website explains where and when to see it ...

    Where to See Comet Lemmon Tonight in the U.S.

    Comet C/2025 A6 (Lemmon) will be well visible in the evening sky from October 18 to November 12. During this period, its brightness will range between magnitude 3.8 and 4.8. To the naked eye, the comet will look like a dim star with a faint blur, while through binoculars or a small telescope, it will appear as a small hazy patch with a bright core and a short tail pointing away from the Sun.

    For example, in New York on October 27, after sunset and the end of civil twilight (6:26 p.m. EDT), Comet Lemmon will be about 30° above the western/southwestern horizon. The comet will set around 9:05 p.m. EDT.

    For comparison, in Los Angeles on the same evening, after the end of civil twilight (~6:30 p.m. PDT), the comet will be about 29° above the western horizon and will set around 8:49 p.m. PDT. Thus, even on the West Coast, observing conditions will be quite similar.




    Be Excellent To Each Other
    Party On, Dudes!