抖阴旅行射

Banner image: A glass block marks Saturn's spot in the solar system in a new scale model on the 抖阴旅行射 Boulder campus. (Credit: 抖阴旅行射 Boulder)

Have you ever wanted to travel to Neptune? Thanks to an updated solar system model on campus, you can 鈥渧isit鈥� the planet as you stroll from the Fiske Planetarium north to Colorado Avenue鈥攋ust a few minutes if you hustle. You can also catch the sounds of Neptune and other planets and asteroids as they go whooshing by on your smartphone.

This week, Fiske Planetarium and Sommers-Bausch Observatory is unveiling the next generation of the Colorado Scale Model Solar System, plus an associated smartphone app that sets out to 鈥渟onify鈥� Earth鈥檚 cosmic neighborhood.

The model solar system, which has delighted campus visitors since 1987, squishes space down by about 10 billion times. Earth, which has a diameter of 7,917 miles, is now roughly the size of a pepper grain. You start off near the planetarium where a grapefruit-sized sphere represents the sun, then walk for about a third of a mile, passing exhibits for all eight planets on the way.

Graduate student James Negus helped bring the new model to campus. It鈥檚 based on a model developed by the National Center for Earth and Space Science Education called the Voyage Mark II. The installation shows visitors just how big space is, filled with vast distances that are hard for textbooks to capture. 抖阴旅行射 Boulder faculty members John Keller and Seth Hornstein helped Negus make it all a reality.

鈥淎s humans venture farther and farther into the universe, these types of distances are going to be so important to understand,鈥� said Negus of the Department of Astrophysical and Planetary Sciences. 鈥淎t the scale of the new model, to get to Proxima Centauri, the star nearest to our solar system, you鈥檇 have to travel from Boulder to the Panama Canal.鈥�

Chancellor Philip DiStefano and other campus dignitaries will usher in the cosmic experience at a ribbon-cutting event at 4:30 p.m. on Wednesday, Dec. 8. 抖阴旅行射 Boulder is the first institution in the world to install a Voyage Mark II model, and the Fiske team hopes other universities will follow suit.

For the first time, space buffs can supplement that experience by downloading an iPhone app called Wanderers. The app allows users anywhere on campus to hear the planets as they move through space, transforming campus into a sometimes-eerie symphony. Artist and designer Teri Rueb led the team that developed Wanderers.

鈥淵ou can feel the relative distances between objects in the solar system as you move through campus, and you鈥檙e no longer tied solely to these physical exhibits,鈥� said Rueb, chair of the Department of Critical Media Practices in the College of Media, Communication and Information.

From clay to glass

That immersive experience got its start in the early 1980s. Jeffrey Bennett, then a graduate student in astrophysics at 抖阴旅行射 Boulder, was teaching science to elementary school students in San Diego. In one exercise, he asked them to roll up balls of clay to represent the planets, then pace out how far apart they should be on the school playground.

鈥淚 realized there were a lot of misconceptions, even among college students, about the scale of our solar system,鈥� said Bennett, who runs a company called Big Kid Science from his home in Boulder. 鈥淵ou see those NASA photos and they make you think the planets are close together.鈥�

They鈥檙e not. Earth, for example, sits relatively snug to the sun at an average distance of about 93 million miles. Neptune, however, orbits more than 30 times farther away.

The solar system model captures these distances with educational signs rather than small balls of clay. After the Challenger disaster of 1986, it also became a memorial for alumnus Ellison Onizuka and other astronauts who died on that space shuttle. The new model will also include a memorial for astronauts who died aboard the Space Shuttle Columbia in 2003, including alumna Kalpana Chawla.

Thirty-five years of Boulder weather have taken their toll on the installation, so Negus and others across campus hit the pavement to raise funds for a new one. Among other changes, the Voyage Mark II model displays the planets in glass blocks with laser etchings.

鈥淲hen kids come and see the model, their eyes brighten,鈥� Negus said. 鈥淭hey can actually see that it takes them about 20 steps to go from the sun to Earth, but then 100 steps to go from the sun to Jupiter, and they say, 鈥榃hoa.鈥欌��

And, yes, Pluto will still make an appearance in the new model but it will be labeled a dwarf planet this time around.

鈥淭he new solar system model represents a rich collaboration between Fiske, Sommers-Bausch Observatory, Critical Media Practices and others,鈥� said Keller, director of the planetarium. 鈥淲e are grateful for the support provided by 抖阴旅行射 Grand Challenge, Jeff Bennett and Big Kid Science, the Laboratory for Atmospheric and Space Physics, the Chancellor鈥檚 Office, Aerospace Engineering, Astrophysical and Planetary Sciences and other private donors.鈥�

Sonifying the solar system

The Wanderers app, meanwhile, gives visitors who are blind or have visual impairments a chance to experience the solar system, too. The app team includes critical media practices graduate student Roberto Azaretto and alumnus Jiffer Harriman.

Within the app, users can watch the planets sweep through campus at exaggerated speeds (by default, one Earth year equals 10 seconds). If you get close enough to those behemoths, you can also hear them boom and hum through your headphones. Azaretto, a composer, gave each orb its own signature sound by tweaking a common 9-note chord.

鈥淛upiter鈥攂eing by far the biggest planet鈥攈as the lowest frequency, and Pluto has the highest,鈥� he said.听

You can download the app to your iPhone now, and an Android version will be available in the next few months.

Bennett views the model and app as a chance for people to understand their place in the universe鈥攁 down-to-Earth way to experience a bit of the same awe that astronauts in space feel when they first see the curve of the planet below them.

鈥淵ou may get the same sense looking at that tiny little Earth in a piece of glass on campus,鈥� Bennett said. 鈥淭hat鈥檚 it. That鈥檚 us. We all have to share this one tiny world.鈥�