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phases of the Moon

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airplane in flight (plane, aircraft, flying)

7 Puzzling Plane Disappearances

Paul Revere. "The bloody massacre perpetrated in King Street Boston on March 5th 1770 by a party of the 29th Regt.," engraved by Paul Revere. Boston Massacre.

There’s a Riot Goin’ On: Riots in U.S. History (Part One)

Estimated battle casualties, Normandy invasion, World War II. WWII, D-Day

Estimated Battle Casualties During the Normandy Invasion and Campaign to Liberate Paris (June–August 1944)

Close up of praying mantis walking on stone ground against a blurred background in Japan

6 Animals That Eat Their Mates

New York NY/ USA- November 23, 2018 Hordes of shoppers throng the Macy's Herald Square flagship store in New York looking for bargains on the day after Thanksgiving, Black Friday.

Why Is It Called Black Friday?

Lake Mead (the impounded Colorado River) at the Hoover Dam. The light-coloured band of rock above the shoreline shows the decrease in water level in the first few years of the 21st century.

6 Lakes That Are Drying Up

Middle East bee locator map

Are the Middle East and the Near East the Same Thing?

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phases of the Moon

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lunar phase quadrature full moon first quarter moon New Moon last quarter moon What Are the Phases of the Moon?blue moon supermoon harvest moon retrograde motion anomaly conjunction constant of aberration synodic period aphelion opposition sidereal period perturbation Kepler’s laws of planetary motion