The Sun's diameter: Amazingly, from the left to the right side of the Sun is about 864,576 miles (1,391,400 km), with a circumference greater than 2.716 million miles (4.371 million km)! Earth has a diameter of about 7,926 miles (12,756 km) and a circumference of about 24,901 miles (40,075 km). [...] Read more

A Lunar Month The lunar month is about 29.53 days, which is the time it takes to go from one new Moon to the next. During this time, the Moon orbits the Earth once and goes through the various phases that we observe from here on Earth. Once In A Blue Moon There is an old phrase, "once in a blue [...] Read more

Earth vs. Sun and Sun vs. Uy Scuti Side-by-Side Comparisons: Earth is only one pixel in this illustration compared to the enormous size of our Sun. However, Uy Scuti and our Sun side-by-side reveal that our Sun is difficult to see, with only 1 pixel in this illustration. More than 4.98 billion [...] Read more

USAF Brigadier General Charles Yeager The Bell X-1 in flight. On February 13, 1923, Yeager was born in Myra, West Virginia, about 38 miles (61 km) west-southwest of Charleston. He served in the United States Air Force from 1941 - 1975, retiring as a Brigadier General. Yeager died on December 07, [...] Read more

First View of Earth from Space. Photo: Public Domain On October 24, 1946, a V-2 rocket was launched from the U.S. Army White Sands Missile Range in New Mexico. A 35 mm movie camera on the rocket captured images every 1½ seconds. It reached an altitude of 65 miles (105 km) before crashing back to [...] Read more

The Viking 2 Spacecraft launched on September 9, 1975, from Cape Canaveral, Florida. About a year later, Viking Lander 2 touched down on Mars at Utopia Planitia on September 3, 1976. Picture 1. Viking Lander 2. Image Credit: NASA Picture 2: First color photo from Viking Lander 2. Image Credit: NASA [...] Read more

Astronaut Buzz Aldrin took the first EVA Selfie in 1966. Photo Credit: NASA As he spacewalked, NASA astronaut Buzz Aldrin (born Edwin Eugene Aldrin Jr., January 20, 1930) took the first-ever EVA "selfie" in 1966, during the Gemini 12 Mission (November 11, 1966, thru November 15, 1966). The photo [...] Read more