6 comments

  • ahmedfromtunis 3 hours ago
    I didn't even realize that we've never seen the sun's poles before as I just assumed we already scanned our star many times over.

    A nice reminder of how patchy and limited our knowledge is despite the impression of the opposite.

    Keep up the great work, humans!

  • lostlogin 8 hours ago
    ‘World First’ is a poor choice of words. ‘First Ever’?
    • riffraff 7 hours ago
      well, they are the first time they're seen on this world so I think it's fine.
    • lionkor 4 hours ago
      It's our world's first -- maybe the others already got it.

      Or better, "humanity's first".

      • bravesoul2 3 hours ago
        Happened outside our world though!
    • throwaway81523 7 hours ago
      There was a previous mission (Ulysses aka International Solar Polar mission) that sent back a lot of data but for whatever reason, they didn't have it send visual images. Big bright ball = no surprise, maybe.
  • superkuh 12 hours ago
    This slightly tilted view of the poles is a teaser. I didn't know they'd managed to incorporate late in the mission gravity assists into the cheaper plan B to slightly tweak out of the ecliptic while dropping close to the sun. That's pretty cool. https://upload.wikimedia.org/wikipedia/commons/6/66/Animatio...

    But we could've had so much more. The original proposal A for the ESA Solar Orbiter was a highly inclined orbit relative to the ecliptic plane to truly get full polar views of the sun. But this was too expensive. So they went with the cheaper proposal B which was mostly just a spectroscopic platform. Similar to SDO AIA, except in a solar orbit (almost completely within the ecliptic plane) instead of SDO AIA's Earth based sun synchronous orbit.

    • BurningFrog 11 hours ago
      They plan to get a more polar orbit each time they get close to Venus: https://www.esa.int/ESA_Multimedia/Images/2020/01/Solar_Orbi...

      Not sure if 33° angle in 2029 is the final "polarity" or if they'll keep tilting after that.

      • widforss 9 hours ago
        Wouldn't the tilt affect the gravity assist of Venus?
        • zamadatix 9 hours ago
          The planning of sure, you've gotta make sure you're crossing the plane at the time, but gravity assist itself is otherwise the same though.
          • widforss 5 hours ago
            At the time, every time, and the position of Venus changes with every orbit. But I guess the folks at ESA are proficient in math.
            • labster 4 hours ago
              Instead of knowing math, they might just ask an LLM to work out the right orbit.
              • lionkor 4 hours ago
                Looks like they dont, seeing how it hasn't crashed and burnt horribly
    • NooneAtAll3 6 hours ago
      you linked Parker probe, not Solar Orbiter
      • jbjorge 1 hour ago
        "But in the end, it doesn't even matter"
    • hcarvalhoalves 11 hours ago
      I suppose it takes a lot of deltaV to get a stable orbit over the sun poles?
      • perihelions 3 hours ago
        It's doable with gravity assists. Ulysses got up to 79° inclination using a Jupiter flyby.

        https://en.wikipedia.org/wiki/Ulysses_(spacecraft)

      • ChocolateGod 4 hours ago
        You'd need to completely cancel out the rotation of the solar system, far beyond what we have the technology to do.
      • sandworm101 2 hours ago
        It does, but most of the needed dV is harvested from the planets during gravity assists. The probe is accelerated/turned several hundred or thousand m/s and in exchange the planets it passes are shifted/slowed/turned by maybe 0.00000000000000000000001 m/s. In this case, the probe largely needs to slow down, to bleed of the speed it got from being at earth's orbit, so the planets are probably being accelerated.
  • sandworm101 9 hours ago
    Dambit. No hexagons. I think i might have lost an old bet.
  • colordrops 4 hours ago
    I love this, seems so minor if not paying attention but it's absolutely mind blowing. Getting a view we never saw of the life giver, an object that used to be revered as a god, nearly every human alive I history has basked in it's light and heat, and the for the first time we are seeing it in full
  • aaron695 1 hour ago
    [dead]