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TIL 3 years after Mark Zuckerberg declared privacy was no longer a “social norm” he bought a home…and four other homes around that home in order to protect his privacy.

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QJmKL TIL that a photon of light can travel the 150 million kilometres from the Sun to the Earth, and in that same time, a gamma ray in the Sun's core will travel only about 13 centimetres. It can take 100,000 years from the core of the Sun to get to the surface — where it bursts out at speed of light.
e4Z4 TIL a Catholic bishop named Robert Grosseteste described the birth of the Universe in an explosion and the crystallization of matter to form stars and planets in a set of nested spheres around Earth in 1225 AD - 4 centuries before Newton proposed gravity and 7 centuries before the Big Bang theory.
m1NMp TIL JP Morgan’s ancestor, James Pierpont, was a founder of Yale College.
KpRB TIL Isaac Newton once tried looking at the sun in a mirror, essentially blinding himself for 3 days and experiencing afterimages for months.
YEmB TIL in 1999, the leader of North Korea was Kim Jong-il - and the leader of South Korea was Kim Jong-pil