Querying arrays of objects and relationships in Groq

groq`*[_type == "art"]{
      _createdAt,
      _id,
      "category": category.title,
      "slug": slug.current,
      "featureImage": featureImage.asset->url,
      images
    }`

'images': images[].asset->url

'images': images[] {
   alt,
   "url": image.asset->url
 }

{
    _createdAt: '2023-04-10T19:34:13Z',
    _id: 'homepageImages',
    _rev: 'QNM76uqvKuoc4uTWDKb5RR',
    _type: 'homepageImages',
    _updatedAt: '2023-04-10T19:35:32Z',
    artSeries: [ [Object] ],
    title: 'Homepage Images'
  }

groq`*[_type == "homepageImages" ]{
      _id,
      _createdAt,
      "artSeries": artSeries[] {
        not sure what I might do here haha
      },
    }`

{"_key":"33077cdafee1","_ref":"4bd3b6a8-b353-4f14-9975-f3a847055509","_type":"reference"}

*[_type == "homepageImages" ]{
      _id,
      _createdAt,
      artSeries[]->{
        //add projection here or remove the brackets if you want all of the fields.
      },
    }

*[_type == "homepageImages" ]{
      _id,
      _createdAt,
      artSeries[]-> | order(_createdAt asc)
    }