In ONE WEEK, many area schools will be on spring break. Do you have your spring break bucket list planned?

If not, let us help! From March 30-April 2, we'll have FIVE different laser shows offered daily, day and evening!

Only $8/person. Details on our website!
about 1 month ago, Lisa Swaney
In ONE WEEK, many area schools will be on spring break. Do you have your spring break bucket list planned? If not, let the Horwitz-DeRemer Planetarium help! From March 30-April 2, we'll have FIVE different laser shows offered daily, day and evening! Check out our schedule and secure your tickets for only $8/person. Set lists and show details can be found on our website! #wherethestarshangout
In ONE WEEK, many area schools will be on spring break. Do you have your spring break bucket list planned? If not, let the Horwitz-DeRemer Planetarium help! From March 30-April 2, we'll have FIVE different laser shows offered daily, day and evening! Check out our schedule and secure your tickets for only $8/person. Set lists and show details can be found on our website! #wherethestarshangout
It's May, so swing by and visit us for a pair of new Saturday shows!

11am ""3-2-1 Liftoff: Space Adventure of Elon the Hamster.""

1pm, we'll feature ""Beyond our Senses: Bank Swallows.""

Tickets are only $5.
about 1 hour ago, Lisa Swaney
It's May, so swing by and visit us for a pair of new Saturday shows! At 11am, come for ""3-2-1 Liftoff: Space Adventure of Elon the Hamster."" Later at 1pm, we'll feature ""Beyond our Senses: Bank Swallows."" Tickets are only $5.00/person and can be purchased ahead of time at www.ticketleap.events/events/hdplanetarium. Available tickets can also be purchased at the door ahead of showtime! #wherethestarshangout
Check out the full moon tonight! Because at this time of year spring flowers appeared in abundance, it should be no surprise that tonight's full moon is referred to as the Flower Moon! Other May full moon names are ""Milk Moon"", ""Hare Moon"", or ""Corn Planting Moon.""
1 day ago, Lisa Swaney
Check out the full moon tonight! Because at this time of year spring flowers appeared in abundance, it should be no surprise that tonight's full moon is referred to as the Flower Moon! Other May full moon names are ""Milk Moon"", ""Hare Moon"", or ""Corn Planting Moon.""
Help us keep the planetarium shining! 🌌

Join us June 16 for a fun night at the ballpark with HoundsCare ⚾ Every ticket purchased through our link/QR code gives $10 back to support our “Don’t Let the Planetarium Go Dark” campaign.

Can’t make it? Please share!
2 days ago, Lisa Swaney
Help us keep the planetarium shining! 🌌 Join us June 16 for a fun night at the ballpark with HoundsCare ⚾ Every ticket purchased through our link/QR code gives $10 back to support our “Don’t Let the Planetarium Go Dark” campaign. Can’t make it? Please share! #WhereTheStarsHangOut
Join us for a great show that features our Earth, "Our Violent Planet." It starts at 11am and will be followed by a star talk, all about what's happening in our night sky! Grab your tickets at www.ticketleap.events/events/hdplanetarium.

#wherethestarshangout
3 days ago, Lisa Swaney
Join us for a great show that features our Earth, "Our Violent Planet." It starts at 11am and will be followed by a star talk, all about what's happening in our night sky! Grab your tickets at www.ticketleap.events/events/hdplanetarium. #wherethestarshangout
Later for the next few evenings (April 28-30), the waxing gibbous moon will be near Spica, the brightest star in Virgo the Maiden. The star could be hard to see in the moon’s bright glow. However, you can also catch them before dawn! SOURCE: EarthSky.org
4 days ago, Lisa Swaney
Later for the next few evenings (April 28-30), the waxing gibbous moon will be near Spica, the brightest star in Virgo the Maiden. The star could be hard to see in the moon’s bright glow. However, you can also catch them before dawn! SOURCE: EarthSky.org
May begins this week!! Have you grabbed our newest brochure? Have you checked out our May-August offerings online? We are scheduled through August, so save the date(s) for the offerings that interest you and join us!


#wherethestarshangout
5 days ago, Lisa Swaney
Program guide for Horwitz-Derer Planetarium shows. Events include "Horwitz-Derer Planetarium Program Guide," "Adventures of the Remaster," and "Beyond Our Senses."
A dark blue background with white text and images, advertising various events for public shows, special events, and membership drives.
Can you believe that we've flown through the month of April already? Here's to more beautiful spring days in May!

Check out the schedule this week and join us for a show if you can!

#wherethestarshangout
6 days ago, Lisa Swaney
A poster for Horwitz-DeRemer Happenings, featuring events for the week of April 26th on a pink heart background.
Somehow, this Saturday is the last one in April! So, if you've been meaning to check out our shows, tomorrow is your last chance for this pair! Have a great weekend everyone!
7 days ago, Lisa Swaney
Somehow, this Saturday is the last one in April! So, if you've been meaning to check out our shows, tomorrow is your last chance for this pair! At 11:00am, we'll show a young audience favorite "One World, One Sky: Big Bird's Adventure." Later at 1:00pm, come to enjoy "Unseen Earth: Observe, Understand, Respond." Have a great weekend everyone! #wherethestarshangout
Happy 33rd Birthday to the Hubble Space Telescope! Hubble was deployed on this date in 1990. NASA.gov has a collection of Hubble's images .

This is Messier 11 (Wild Duck Cluster) as its brightest stars form a “V” shape that somewhat resembles a flock of ducks in flight.
8 days ago, Lisa Swaney
Happy 33rd Birthday to the Hubble Space Telescope! Hubble was deployed on this date in 1990. NASA.gov has an awesome collection of Hubble's images throughout the years, try to check them out sometime! Pictured here is Messier 11 is also known as the Wild Duck Cluster, as its brightest stars form a “V” shape that somewhat resembles a flock of ducks in flight. #wherethestarshangout
Summer is just around the corner and we have a fun summer activity for your creative kiddos to try!

Children ages 5-14 are invited to join us for our first ""Art Among the Stars"" at the Horwitz-DeRemer Planetarium. Cost is $25. This includes painting instruction, all supplies, and a viewing of the planetarium show ""Treasures of the Milky Way!""

Sign up today at our ticketing link in our bio.
9 days ago, Lisa Swaney
An event poster with night sky, trees, and a red border. It reads "Art Among the Stars: Milky Way Magic."
It's Earth Day today! Wise words for us all to remember...

Enjoy this new picture taken on April 3rd by Artemis II commander Reid Wiseman

#wherethestarshangout
10 days ago, Lisa Swaney
Image of planet Earth with a quote at the top and bottom: "Earth Day 2026."
There are some cool things to check out in the night sky the next few nights...
➡On the evenings of April 18 and 19, check out the pretty waxing crescent moon. It’ll hang low in the western sky after sunset. And it’ll be near the brilliant planet Venus. Look for them about an hour after sunset.
➡On April 18, the moon will make a close pass by brilliant Venus. Then on the next evening, it’ll lie near the famous Pleiades star cluster, also known as the 7 Sisters. The bright orange giant star Aldebaran is nearby. The Pleiades star cluster and Aldebaran are in the constellation Taurus the Bull. They’ll set before midnight.
➡Look for the delicate glow of earthshine on the unlit side of the moon. That’s light reflected off the Earth. SOURCE: earthsky.org
11 days ago, Lisa Swaney
A sky map shows celestial bodies. Venus, Aldebaran, and Pleiades are marked. Dates April 18 and 19 are shown.

The next 2 nights are perfect for seeing earthshine! 🌙That soft glow on the dark side of the Moon comes from sunlight reflecting off Earth and back onto the Moon also called the “Da Vinci glow.” Best seen just after sunset or before sunrise near a New Moon. Take a look tonight!

12 days ago, Lisa Swaney
The next two nights are perfect for spotting earthshine! 🌙 That soft glow on the dark side of the Moon comes from sunlight reflecting off Earth and back onto the Moon—also called the “Da Vinci glow.” Best seen just after sunset or before sunrise near a New Moon. Take a look tonight!

Meteor Shower season has begun! Sky watchers, you should be in for a treat as the viewing conditions should be favorable for the peak of the Lyrid meteor shower. Best views are expected the late hours of 4-22 and early 4- 23. Set your alarm clocks and get your equipment ready!

12 days ago, Lisa Swaney
Stars and constellations in a night sky, including Radiant, Vega, and Deneb. Landscape with hills and trees.
Here's our lineup for this week!
And, don't forget! If you want to join us for Sunset Meditation, registration closes soon. Head to the Waukesha County website to save your spot!


#wherethestarshangout
13 days ago, Lisa Swaney
Event flyer with a multicolored heart background. It reads "Horwitz-DeRemer Happenings Week of April 19th" with activities listed.
It's Saturday and we have TWO great shows on the schedule. At 11am, check out favorite "One World, One Sky: Big Bird's Adventure." Later at 1pm, we'll feature "Unseen Earth: Observe, Understand, Respond." Buy seats online at www.ticketleap.events/events/hdplanetarium
14 days ago, Lisa Swaney
Poster featuring a yellow bird with a red beak and eyes. Text reads "One World, One Sky: Big Bird's Adventure". Background shows night sky with moon and stars.
Happy Thursday, all! Do you have plans?

Because, the moon reaches the new moon phase tonight! Therefore, if you can, and the weather cooperates, it would be an ideal night for stargazing!

#wherethestarshangout
16 days ago, Lisa Swaney
Milky Way stretches across a dark sky with numerous stars. The atmosphere appears calm with a few streaks of light.
We've just begun "International Dark Sky Week." Check out their page to learn more about light pollution and how YOUR actions can make a difference.

https://darksky.org/

#wherethestarshangout
17 days ago, Lisa Swaney
This is a great time of the month and year to observe ""earthshine!"" Are you familiar with what earthshine is?

Earthshine is a dull glow which lights up the unlit part of the Moon because the Sun’s light reflects off the Earth's surface and back onto the Moon. It is also sometimes called ""ashen glow"", ""the old Moon in the new Moon's arms"", or the ""Da Vinci glow"", after Leonardo da Vinci, who explained the phenomenon for the first time in recorded history. Earthshine is best seen a few days before and after a New Moon, right after sunset or before sunrise. Scientists studying global warming found that earthshine is more intense in April and May!

Check out this beautiful picture and example of an Earthshine morning moon, taken by Tom Wildoner in 2016.

Hopefully you will have the chance to check it out this month and next! SOURCE: timeanddate.com IMAGE: Tom Wildoner"
18 days ago, Lisa Swaney
A sky with a waxing crescent moon and orange clouds. Trees are in the foreground.