Space

On the morning of January 28, 1986, a nation of viewers gave a collective gasp. Space Shuttle Challenger, the crown jewel of NASA’s ambitious shuttle program, had just exploded, leaving a telltale trail behind as it disintegrated into thin air. The disaster prompted an outpouring ...read more

By January of 1986 America was already bored with spaceflight. It was, in part, NASA’s own fault. The government agency had debuted the space shuttle program five years earlier with an aggressive public-relations message that the reusable vehicles would make access to space both ...read more

Saturnalia, held in mid-December, is an ancient Roman pagan festival honoring the agricultural god Saturn. Because of when the holiday occurred—near the winter solstice—Saturnalia celebrations are the source of many of the traditions we now associate with Christmas, such as ...read more

Solar and lunar eclipses—astronomical events that occur when the Earth, the Sun and the Moon are aligned—have figured prominently in human history. Striking to behold, eclipses often were viewed as supernatural phenomena. They also allowed ancient civilizations to develop ...read more

1. John Glenn was a star before joining the Mercury program. Glenn had fallen in love with flying at an early age, building model airplanes while growing up in Ohio. In 1941, Glenn discovered a U.S. Department of Commerce program looking for students to train as pilots. Just six ...read more

For much of history, comets were thought to be divine omens, atmospheric anomalies or celestial wanderers that flashed through the solar system before vanishing into interstellar space. All that started to change in 1705, when the English astronomer Edmond Halley published his ...read more

Percival Lowell knew something else was out there. Based on his calculations, the American businessman and astronomer was convinced that an unknown ninth planet was responsible for the wobbling orbits of Uranus and Neptune. For more than a decade until his death in 1916, Lowell ...read more

Becoming the First Man in Space The son of a carpenter, Yuri Alekseyevich Gagarin was born in the village of Klushino in Smolensk, Russia in 1934. At 16, he moved to Moscow to apprentice as a foundry man in a metal works, but soon transferred to a technical school in Saratov. ...read more

Planet Nine is located in an icy, debris-ridden part of space known as the Kuiper Belt, some 20-100 billion miles away from the sun, which means it would take between 10,000 and 20,000 years to make one solar orbit. By comparison, Neptune, currently recognized as the most distant ...read more

Roman mythology is to thank for the monikers of most of the eight planets in the solar system. The Romans bestowed the names of gods and goddesses on the five planets that could be seen in the night sky with the naked eye. Jupiter, the solar system’s biggest planet, was named for ...read more

Though far less famous than later non-human astronauts, the first animals in space were a group of fruit flies, launched to an altitude of 42 miles at the tip of a V-2 rocket, developed and used by the Germans during World War II and later by American military scientists on ...read more

1. It was named for a famous astronomer. The Hubble Space Telescope takes its name from Edwin Hubble, an American astronomer whose observations helped broaden scientists’ view of the universe to include galaxies other than our own. While working at the Mount Wilson Observatory ...read more

After its successful launch, the spacecraft Apollo 13 and its crew of three—commander Jim Lovell, command module pilot Jack Swigert and lunar module pilot Fred Haise—were on their way to the Fra Mauro highlands of the Moon. There, Lovell and Haise planned to roam the Imbrium ...read more

In ancient times, many scientists believed the speed of light was infinite and could travel any distance instantaneously. The Italian physicist Galileo Galilee was among the first to try to measure the speed of light. In the early 17th century, he devised an experiment in which ...read more

Every epic moment in modern history inevitably spawns a tangled web of conspiracy theories, and the Apollo moon landings are no exception. From the moment astronauts Neil Armstrong and Buzz Aldrin set foot on the lunar surface on July 21, 1969, some believed it was all an ...read more

The launch of Buran (Russian for “snowstorm”) from the same patch of central Asia from which Sputnik and Yuri Gagarin rocketed into space marked a new milestone in the Soviet space program. The first test flight of the Soviet space shuttle came nearly 15 years after the U.S.S.R. ...read more

1. 800: Charlemagne is crowned Holy Roman Emperor. Often called the “Father of Europe,” Charlemagne was a Frankish warrior king who united much of the continent under the banner of the Carolingian Empire. Beginning in the late 700s, Charlemagne forged a vast kingdom through ...read more

1. First artificial earth satellite: Sputnik The Soviet Union launched Sputnik 1, the first manmade object to orbit the earth, on October 4, 1957, to little fanfare. In fact, the official Soviet news agency, Tass, didn’t announce the launch until the next day. Global reaction to ...read more