A Billion Here, A Billion There

Bill Gates House, “Xanadu 2.0”. See question two.
Image Wikimedia Commons

The first question today is related to the date, 29 September. The remainder are not date-related but follow-on from number one.

One

On this day newspapers proclaimed the world’s first billionaire. Who was this billionaire and in what year were these stories published?


Two

Tech billionaire Bill Gates had a lakeside mansion built in Medina, Washington. A Wikipedia article about the house refers to it as follows:

Some news articles call the house Xanadu 2.0, a reference to the motion picture …, which was itself a reference to the opening lines of Samuel Taylor Coleridge’s classic poem …

— Wikipedia

What 1941 movie and poem published in 1816 are missing from this quote?


Three

Which is the nearest planet to the Sun whose average orbital distance is more than one billion miles? This planet has only been explored by one spacecraft (in 1986): what spacecraft?


Four

What now deceased billionaire bought the island of Skorpios in the Ionian Sea in 1963; and who did this billionaire marry on the island in 1968?


Five

In January 2025, an American tech company saw the largest one-day loss in market capitalisation for a U.S. company in history. What company and how much was that loss?


Good luck! I’ll post the answers later.


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