Neutron

<svg
    xmlns="http://www.w3.org/2000/svg"
    width="512"
    height="512"
    viewBox="0 0 497 497"
>
    <path
        fill="#f5de46"
        d="M248.5 497C111.257 497 0 385.743 0 248.5S111.257 0 248.5 0 497 111.257 497 248.5 385.743 497 248.5 497zm154.503-93.997C444.272 361.734 467 306.863 467 248.5s-22.728-113.234-63.997-154.503S306.863 30 248.5 30 135.266 52.728 93.997 93.997 30 190.137 30 248.5s22.728 113.234 63.997 154.503S190.137 467 248.5 467s113.234-22.728 154.503-63.997z"
    />
    <path
        fill="#efedef"
        d="M248.5 368.5c-32.055 0-62.189-12.482-84.852-35.146-22.666-22.665-35.148-52.799-35.148-84.854s12.482-62.189 35.146-84.852c22.665-22.666 52.799-35.148 84.854-35.148s62.189 12.482 84.852 35.146c22.666 22.665 35.148 52.799 35.148 84.854s-12.482 62.189-35.146 84.852C310.689 356.018 280.555 368.5 248.5 368.5z"
    />
    <path
        fill="#e3e0e4"
        d="M342.77 322.77c-2.91 3.68-6.05 7.21-9.42 10.58-22.66 22.67-52.8 35.15-84.85 35.15s-62.19-12.48-84.85-35.15c-22.67-22.66-35.15-52.8-35.15-84.85s12.48-62.19 35.15-84.85c3.37-3.37 6.9-6.51 10.58-9.42-16.68 21.08-25.73 46.98-25.73 74.27 0 32.05 12.48 62.19 35.15 84.85 22.66 22.67 52.8 35.15 84.85 35.15 27.29 0 53.19-9.05 74.27-25.73z"
    />
    <circle cx="81" cy="88" r="72" fill="#efedef" />
    <path
        fill="#5a86cc"
        d="M51 73h60c5.523 0 10 4.477 10 10v10c0 5.523-4.477 10-10 10H51c-5.523 0-10-4.477-10-10V83c0-5.523 4.477-10 10-10z"
    />
    <path
        fill="#4377c4"
        d="M71 103H51c-5.52 0-10-4.48-10-10V83c0-5.52 4.48-10 10-10h20c-5.52 0-10 4.48-10 10v10c0 5.52 4.48 10 10 10z"
    />
    <circle cx="417.5" cy="413.5" r="79.5" fill="#efedef" />
    <path
        fill="#e3e0e4"
        d="M139.28 130.28C126.19 148.29 104.96 160 81 160c-39.76 0-72-32.24-72-72 0-23.96 11.71-45.19 29.72-58.28C30.09 41.59 25 56.2 25 72c0 39.76 32.24 72 72 72 15.8 0 30.41-5.09 42.28-13.72zM481.15 461.15C466.65 480.49 443.54 493 417.5 493c-43.91 0-79.5-35.59-79.5-79.5 0-26.04 12.51-49.15 31.85-63.65C359.9 363.13 354 379.62 354 397.5c0 43.91 35.59 79.5 79.5 79.5 17.88 0 34.37-5.9 47.65-15.85z"
    />
    <path
        fill="#5a86cc"
        d="M384.5 398.5h66c5.523 0 10 4.477 10 10v10c0 5.523-4.477 10-10 10h-66c-5.523 0-10-4.477-10-10v-10c0-5.523 4.477-10 10-10z"
    />
    <path
        fill="#4377c4"
        d="M404.5 428.5h-20c-5.52 0-10-4.48-10-10v-10c0-5.52 4.48-10 10-10h20c-5.52 0-10 4.48-10 10v10c0 5.52 4.48 10 10 10z"
    />
    <path
        fill="#e06c57"
        d="M308 234h-43a2 2 0 0 1-2-2v-43c0-5.523-4.477-10-10-10h-10c-5.523 0-10 4.477-10 10v43a2 2 0 0 1-2 2h-43c-5.523 0-10 4.477-10 10v10c0 5.523 4.477 10 10 10h43a2 2 0 0 1 2 2v43c0 5.523 4.477 10 10 10h10c5.523 0 10-4.477 10-10v-43a2 2 0 0 1 2-2h43c5.523 0 10-4.477 10-10v-10c0-5.523-4.477-10-10-10z"
    />
    <g fill="#dd554e">
        <path
            d="M245 234h-14c1.1 0 2-.9 2-2v-43c0-5.52 4.48-10 10-10h10c.68 0 1.35.07 1.99.2-4.56.94-7.99 4.97-7.99 9.8v43c0 1.1-.9 2-2 2zM247 259v60h-4c-5.523 0-10-4.477-10-10v-43c0-1.1-.9-2-2-2h-43c-5.523 0-10-4.477-10-10v-5h59c5.5 0 10 4.5 10 10z"
        />
    </g>
</svg>