Proton

<svg
    xmlns="http://www.w3.org/2000/svg"
    width="512"
    height="512"
    viewBox="0 0 64 64"
>
    <circle cx="28.85" cy="44.07" r="5" />
    <circle cx="20.56" cy="22.74" r="4" />
    <path
        d="m26.19 24.78c-.47 1.3-1.38 2.4-2.56 3.1l3.64 9.38c.51-.12 1.03-.18 1.57-.18 1.66 0 3.18.58 4.38 1.55l9.15-8.54c-.45-.73-.72-1.58-.74-2.49l-15.45-2.81z"
    />
    <circle cx="46.63" cy="27.48" r="3" />
    <path
        d="m32 4c-15.46 0-28 12.54-28 28s12.54 28 28 28 28-12.54 28-28-12.54-28-28-28zm14.63 28.48c-1.08 0-2.07-.35-2.89-.94l-9.14 8.54c.79 1.13 1.26 2.51 1.26 3.99 0 3.86-3.14 7-7 7s-7-3.14-7-7c0-2.61 1.44-4.89 3.56-6.09l-3.64-9.37c-.39.08-.8.12-1.22.12-3.31 0-6-2.69-6-6s2.69-6 6-6 6 2.69 6 6v.08l15.44 2.81c.74-1.84 2.53-3.15 4.63-3.15 2.76 0 5 2.24 5 5s-2.24 5-5 5z"
    />
</svg>