September 27th, 2016
Waning Crescent Moon
moon
Seth Jarvis

Remembering Challenger 30 Years Later

“Seared into our memory.” There are images of tragedy we experience that are so emotionally devastating our memory of them does not fade with the passage of time. January 28, 1986. Thirty years ago. I was in a coffee shop near Hansen Planetarium,…

Nick Jarvis

Night Vision: Human Spaceflight

Imagine the state of the world, and the state of science, in 1640. Galileo Galilei was in his last years, blind, and under house arrest for his view of the solar system, and Isaac Newton had not yet been born. But…

Robert Bigelow

Planet Watcher’s Alert

Each morning from the last part of January to mid-February, all five planets visible to the unaided eye (Mercury, Venus, Mars, Jupiter and Saturn) will appear together in the sky before sunrise, weather permitting. The last time this happened was…

Amy Oliver

FREE EVENT: Celebrating Women in Space Science and Engineering

50% of the newest class of NASA astronauts is female. 26% of the astronaut corps at NASA is female. 25% of the New Horizons mission team at NASA was female. And the number of women in space science and engineering…

Night Vision: Glorious Galaxies

During the first two weeks of January 1610, Galileo pointed a telescope approximately 1.5 inches in diameter up at the night sky and observed, among other things, some of the never-ending number of stars that make up the Milky Way…

Amy Oliver

The Hansen to Clark Legacy: Celebrating 50 Years of Salt Lake City’s Planetarium

On Thanksgiving Day in 1965, the doors of the old Salt lake City Public Library building at 15 So. State Street in Downtown Salt Lake City opened again, but with a new purpose and a new promise: to enlighten the…

Thomas

Night Vision: A Century of General Relativity

A century ago, Albert Einstein published his General Theory of Relativity, which radically changed our understanding of gravity. Einstein proposed that gravity results from the curvature of a blend of space and time that is today appropriately called space-time. Space-time…

Duke Johnson

Night Vision: Robotic Explorers

Robotic explorers sent to the far reaches of our solar system enable us to appreciate the wonders that abound without actually going to these special places. Journeys through space to hazardous places are currently impossible for humans, but radiation hardened…

Paul Gibbs

Night Vision: Venus

Venus, the second planet from the Sun, is sometimes referred to as our sister planet, due to its similarity in size and density to Earth. But in many important respects, this inhospitable planet is nothing like the planet we call…

Robert Bigelow

Dress Warm for this Shower

The famous Leonid meteor shower is expected to peak at 10 p.m. MST on Tuesday, November 17. This meteor shower occurs every year as Earth collides with a stream of dusty debris shed by comet Temple-Tuttle. When these tiny comet…