stellar parallax

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The Colosseum, Rome, Italy. Giant amphitheatre built in Rome under the Flavian emperors. (ancient architecture; architectural ruins)

New Seven Wonders of the World

Leonardo da Vinci (1452-1519), Italian Renaissance painter from Florence. Engraving by Cosomo Colombini (d. 1812) after a Leonardo self portrait. Ca. 1500.

10 Famous Artworks by Leonardo da Vinci

Ruminant. Deer. Red deer. Cervus elaphus. Buck. Stag. Antlers.

9 of the World’s Deadliest Mammals

solar eclipse, sun, moon, astronomy, space

How Do You Tell the Difference Between Total, Annular, Solar, and Lunar Eclipses?

Moonrise over Tucson, Arizona

Why Doesn’t Arizona Observe Daylight Saving Time?

Hemp (Cannabis sativa).

9 Mind-Altering Plants

Camel at Khor Rori, Oman; mammal.

Do Camels Store Water in Their Humps?

stellar parallax

astronomy

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major reference

In parallax: Stellar parallax
The stars are too distant for any difference of position to be perceptible from two places on Earth’s surface, but, as Earth revolves at 149,600,000 km from the Sun, stars are seen from widely different viewpoints during the year. The effect on their…
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