Allen F. Blocher Planetarium

SPRING 2020: 
The Allen F. Blocher planetarium will host a series of
 Sunday public planetarium programs in the interval
January 26 - May 10, 2020.
The public shows start at 2:00 p.m. and are free of charge. We can accomodate up to 55 people, on a first-come, first-served basis.

Here is the list of dates, titles, and short program descriptions:

January 26
February 2, 9, 16, 23 
March 1, 8


This program explores the very nature of a star from what makes them shine, to what makes them in the first place. We answer such questions as what are stars made of, how long do they live, and how they are born and die. 



Why Add a Leap Day? Why Do We Have Leap Years? Who Invented Leap Years? What are the Rules of Calculating Leap Years? What's the Science Behind Leap Seconds? Is There a Perfect Calendar?

These are just a few questions that we'll address in our special planetarium program, offered in conjunction with 

the UWSP Museum of Natural History

Leap Day.jpg

March 29
April 5, 19, 26 
May 3, 10

No shows on March 15, 22 (Spring Break) and April 12 (Easter Sunday)


Cosmic Colors will take you on a wondrous journey across the entire electromagnetic spectrum.  Discover the many reasons for color - like why the sky is blue and why Mars is red.  Take a tour within a plant leaf and journey inside the human eye.  Investigate x-rays by voyaging to a monstrous black hole and then back to your doctor's office.  You will even see the actual color of a dinosaur - based on recent evidence.  Get ready for an amazing adventure under a rainbow of cosmic light. 

SPRING 2020: The Allen F. Blocher planetarium will host 30-min long night sky presentations every Monday night (January 28 through May 4), starting at 8:00 p.m. These presentations will focus on describing the current night sky from Central Wisconsin. At 8:30 p.m., visitors are invited to go to the Arthur J. Pejsa observatory and enjoy real sky telescopic observations using our 16-inch computer-controlled telescope, weather permitting. Typical targets include: the Moon, planets, stars, stellar clusters, nebulae, galaxies.

 All regular public planetarium programs are designed for a general audience, and should appeal to all age groups from elementary grades to adults.

All Sunday programs begin promptly at 2:00 p.m. and last approximately one hour.  Please plan arrivals during this time interval. All Monday night planetarium night sky progarms begin promptly at 8:00 p.m. and last approx. 30 min. Planetarium doors open about half an hour prior to each scheduled performance.

As a public service to the community, there is no admission charge for the regularly scheduled programs. Seats are first come, first served for up to about 55 people.  

Because of the limited seating, we request that groups of 15 or more please schedule a special showing. Special showings may be arranged by appointment at 715-346-2139 or by submitting a completed request form available on our website: There is a cost of $25 per group (not per person) for these presentations.

NOTICE: The Arthur J. Pejsa Observatory will reopen for the general public in on January 27, 2020 for regular public observing sessions (8:30 - 10:00 p.m.)

For further information, call 715-346-2208, or visit our site at

Location and Parking

 The Allen F. Blocher planetarium is located on the second floor of the Science Building, by the Foucault pendulum. Direct access is obtained through the east side entrance. The Arthur J. Pejsa Observatory houses a 0.4-m (16-inch) Meade, computer controlled telescope and is located on the roof of the Science Building, on its west wing. Access to the observatory is obtained by using the southwest stairwell in the Science Building and going to the fourth floor, room D402. Visitors are best advised to go to the third floor and follow the signs to the observatory by accessing the southwest stairwell. 

Parking spots for visitors attending our programs are available in Lots D or E or along the adjacent Stanley Street. For more information please visit




The Allen F. Blocher Planetarium Presents:

Laser Light Shows

The shows help raise funds for the purchase of new astronomical shows and other educational expenses. They are presented by 

Audio-Visual Imagineering, a leader in laser engineering and custom laser show production.

Wednesday – Saturday

March 25– 28 & April 1 – 4

Times: 8, 9, and 10 p.m.


Admission Prices (tax included):   

Adults  $5 

Students  $4   

UWSP Students with current ID $3

 Tickets are available at the door beginning at 7:30 p.m. and are valid that day only. The shows are suitable for people age 12 and older. Special shows for groups of 20 or more can be scheduled by contacting the planetarium office at 715-346-2139.   


Schedule of the musical selections:

Mar. 25 – Led Zeppelin

Mar. 26 – Laser Vinyl 

Mar. 27 – Pink Floyd – Dark Side of the Moon

Mar. 28 – Pink Floyd – The Wall
Apr. 1 – Pink Floyd – The Wall

Apr. 2 –Led Zeppelin

Apr. 3 – Beatles

Apr. 4 – Pink Floyd – Dark Side of the Moon



FALL 2019: 
The Allen F. Blocher planetarium will host a series of
 Sunday public planetarium programs in the interval
September 8 - December 15, 2019.
The public shows start at 2:00 p.m. and are free of charge. We can accomodate up to 55 people, on a first-come, first-served basis.
Here is the list of dates, titles, and short program descriptions:

September 8, 15, 22, 29 
October 6, 13

Hubble Vision 

This program looks at the discoveries of the Hubble Space Telescope during its almost three decades in orbit. Starting in our own solar system the program moves on to look at the stars and how they are born and die. Finally it looks at the wide variety of galaxies. The program finishes by looking at some of the most distant objects yet observed.  

October 20 (to be included in the Wisconsin Science Festival), 27 
November 3, 10, 17, 24

No show on December 1 (Student Vacation)

Gods of the Solar System

Each one of the significant planetary bodies has been named after a god or goddess from mythology. This program not only mentions the history of the name but looks at what we know about each of these bodies today. No longer do these objects hold mythical significance but today we understand them for what they are, planetary bodies in many ways like Earth. For all of the planets we have not only observed them through our telescopes but we have visited them with robotic spacecraft and have viewed these planets close up. This program is really an opportunity to see what we have learned about each of the planetary bodies in the solar system. We will also look at why some of these objects are now called dwarf planets and where these dwarf planets are located. This program gives you a unique tour of the solar system.

December 8, 15

Winter Wonders (2:00 PM)

Our holiday program, especially for the young, takes a multicultural look at the many holiday customs and why the winter solstice was important. The program also describes different religious traditions and takes a look at Christmas story and the star. 

December 8, 15

Season of Light (3:15 PM) 

This delightful multicultural program will lead you through the discovery of many basic astronomy concepts as you explore the holiday traditions of several cultures and religions. Also hear about the origins of many of our modern holiday customs. We conclude with a look at some of the ideas of what the Christmas star was. 


SUMMER 2019: 
The Allen F. Blocher planetarium will host a series of
  Monday & Wednesday evening public planetarium programs in the interval
May 28 - July 22, 2019.
The public shows start at 7:30 p.m. and are free of charge. We can accomodate up to 55 people, on a first-come, first-served basis.
Here is the list of dates and titles:

Week 1: Wednesday, May 29 – Mars Quest (No show Monday, May 27 - Memorial Day)

Week 2: Monday, June 3 & Wednesday, June 5 – Sky Quest

Week 3: Monday, June 10 & Wednesday, June 12 – Chasing the Ghost Particle: From the South Pole to the Edge of the Universe

Week 4: Monday, June 17 – Journey to the Stars (No show Wednesday, June 19)

Week 5: Monday, June 24 & Wednesday, June 26 – Bad Astronomy: Myths and Misconceptions

Week 6: Monday, July 1 & Wednesday, July 3 – Endless Horizon

Week 7: Monday, July 8 & Wednesday, July 10 – Dawn of Astronomy

Tuesday, July 9 - SPECIAL EVENT - PROJECT MOON (7-9 pm in the planetarium), followed by telescopic observations of the Moon atop the Science Bldg., in the observatory area (9-11 pm) 

Week 8: Monday, July 15 & Wednesday, July 17 - The Stargazer

Week 9: Monday, July 22 - Galaxies