A picture of <a href="https://en.wikipedia.org/wiki/Trafalgar_Square" class="extiw" title="en:Trafalgar Square">Trafalgar Square</a> taken by scientist Sir Norman Lockyer in 1909 from a Helium balloon
<a href="https://en.wikipedia.org/wiki/Lockyer_Norman" class="extiw" title="en:Lockyer Norman">Lockyer Norman</a>
1909-11-07
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