Trivia

Hard

Which Letter Appears Once a Year on the Moon’s Surface?

J
X
Y
H

Answer: X

The human mind is a pattern seeking one.  We humans are quite good at turning abstract shapes into familiar ones.  One of the most famous astronomical examples of this is the Man in the Moon–from our terrestrial vantage point the craters on the Moon’s surface look like a man’s face looking down on us.

If you look even closer at the Moon, however, you will find a much tinier surface feature just waiting for us to visualize a symbol over it.  For a scarce four hours at the beginning of the first quarter, the horizon of the Moon is illuminated by the Sun in just such a way that the walls of the lunar craters La Caille, Banchinus, and Purbach cast shadows that create the illusion of a giant X on the surface of the Moon. This formation is known as the Purbach Cross (thanks to the related crater) or the Werner X (named so after the Werner crater, a sizable landmark just south of the X formation).

Bonus Trivia: Formations like the Purbach Cross are known as clair-obscur formations, or light-dark formations, created by extreme contrast between natural light (in this case the sun) and darkness (the deep darkness of the dark side of the Moon and the Moon’s craters).

Trivia

Hard

The First Science Fiction Serial Film Was?

Trivia

Hard

James Bond, The Iconic And Fictional British Spy, Was Named After A Real?

Trivia

Easy

Which Famous Inventor Allegedly Electrocuted An Elephant To Discredit His Competition?

Trivia

Very Hard

The Phone Books On Which Of These Islands Include Nicknames For Citizens?

Trivia

Hard

Apollo Astronauts Saw Streaks Of Light Caused By What?

Trivia

Easy

The Direction Of Clock Hand Movement Was Determined By?

Trivia

Very Hard

Which Astronaut’s First Moonwalk Words Were Intended To Settle A Bet?

Trivia

Hard

The SEGA Saturn Featured Fewer Game Titles Because Of What?

Trivia

Easy

Which Film Does George Lucas Wish To Smash With A Sledgehammer?

Trivia

Easy

“Gaffer Tape” Derives Its Name From Which Of These Industries?