Philly Acts of Science

In April 2026, thousands of Philadelphians celebrated our nation’s 250th birthday by taking part in simple Acts of Science that protect wildlife, explore our night sky, and strengthen our city.

Throughout April 2026—Citizen Science Month—and the 2026 migration season, people:

Looked through telescopes and binoculars stationed across the city to observe constellations and measure light pollution.

Decorated their windows with bird-safe, 250th-anniversary decals featuring the Eagles, 76ers, Phillies, PHL250 logo, the American flag, and a red-white-blue birthday cake—helping prevent bird collisions while celebrating our city and country.

Philadelphia was the birthplace of America. In 2026, it became the birthplace of 2.50 million Acts of Science.

Join in. Make a difference. Celebrate together.

Explore the Night Sky Across Philadelphia

In April 2026, volunteers from The Franklin Institute, NASA’s Night Sky Network, Dark Sky Network, Globe at Night, and Lights Out Philly hosted stargazing stations throughout the city. Philadelphians could look through telescopes or binoculars, learn to identify constellations, and help measure light pollution.

Interactive Map

Find telescope & binocular stations near you

Discover local events hosted by our science, education, and community partners

View locations offering guided sky tours and light-pollution measurement activities

Projects You Can Do Anywhere in Philly

Report light pollution levels with Globe at Night

Track nighttime bird migration patterns

Identify stars and constellations with easy apps

Contribute data to national research efforts on energy use, wildlife behavior, and sky quality

Your observations help scientists understand how city lights affect human health, wildlife, energy waste, and our ability to see the night sky.

Smithsonian Wildlife: Our Shared Future 250

Respond to questions about wildlife in camera trap images.

Are we alone in the universe?

Join the search for extraterrestrial civilizations!

Backyard Worlds: Cool Neighbors

Discover the Sun’s most extreme cosmic neighbors.

10:00 AM

Transit Tours – Transit Forward Philly

Remember the first time you tried to transfer from the L to a bus in an unfamiliar neighborhood? Or navigated the city hall concourse? How about figuring out how to read the SEPTA map or your favorite transit app?

As a Transit Forward Philly subscriber, you may be a transit pro, but many of our friends and neighbors may be new to using SEPTA.

Whether you are looking for alternatives to high gas prices, are new to the area, or have just always wanted to learn how to use SEPTA, Transit Forward Philly are proud to launch weekly transit tours this summer.

Every Saturday morning from June 20th – August 22nd, different neighborhoods will be explored. Single ride passes are available to cover the cost of participating and transit riders of all experience levels are welcome.

3:30 PM PST / 6:30 PM EST

Do NASA Science LIVE!

Register to join from anywhere!
SciStarter is partnering with NASA to present a series of free virtual events featuring NASA citizen science projects, live Q&As with scientists, and step-by-step instructions to get involved in real time! No previous experience or specialized experience is required!

The featured project for December 11, 2026 will be announced soon. Register to save the date and receive a notification when the project is announced.

Featured Project: To Be Announced

3:30 PM PST / 6:30 PM EST

Do NASA Science LIVE!

Register to join from anywhere!
SciStarter is partnering with NASA to present a series of free virtual events featuring NASA citizen science projects, live Q&As with scientists, and step-by-step instructions to get involved in real time! No previous experience or specialized experience is required!

The featured project for February 11, 2026 will be announced soon. Register to save the date and receive a notification when the project is announced.

Featured Project: To Be Announced

Learn, Explore, and Take Action

Whether you’re joining telescope pop-ups or decorating your windows with 250th anniversary bird-safe decals, here are resources to support your Act of Science:

Night Sky & Light Pollution

How artificial light affects sleep, energy use, and wildlife

Tips for reducing light pollution at home

Constellation guides and beginner astronomy tools

Local dark-sky events and citizen science projects

Bird Migration & Bird-Safe Homes

Why up to one billion birds die from window collisions each year in the U.S.

How decals prevent bird strikes—especially at homes and low-rise buildings

When and where migration peaks in Pennsylvania

Steps to protect birds in your neighborhood

Learn More

SciStarter.org – Citizen science opportunities and project guides

Academy of Natural Sciences – Bird and ecology resources

The Franklin Institute – Astronomy and science learning tools

Lights Out Philly – Local bird protection guidelines

Telescope or Binocular Guide

Volunteers helped set up viewing stations across the city on select nights in April 2026. No experience required!

Volunteer Resources

How to safely set up and operate telescopes and binoculars

Tips for guiding others to find constellations

How to collect and submit light-pollution measurements

Outreach materials for engaging families, schools, and community groups

Visit the SciStarter Microsite to learn more, sign up, and access training materials.

Celebrate America’s 250th—and Protect Birds

Every Philadelphia household will receive a sheet of commemorative 2026 Bird-Safe Window Decals designed in partnership with:

Philadelphia Eagles

Philadelphia 76ers

Philadelphia Phillies

PHL250

Lights Out Philly

SciStarter

City of Philadelphia

Academy of Natural Sciences

Franklin Institute

BirdingPhilly

Philadelphia Education Fund

What’s on the Decals

Each sheet includes a mix of celebratory and bird-safe designs:

Eagles, 76ers, and Phillies logos

American flag stars & stripes

A red-white-blue birthday cake

Festive shapes that break up reflections AND decorate the city

Educational messages on the reverse side

Why Use Them?

Birds mistake reflections for open sky—especially during migration

Most fatal window strikes happen at homes and low-rise buildings

Decals dramatically reduce collisions and save countless lives

Display them March–November 2026 during peak migration

Where to Get Them

Decals will be distributed through:

Philadelphia250 Block Party Kits

Recreation centers & libraries

Visitors Center

National Park Service sites

Science museums & STEM partners

Schools and community organizations

This citywide initiative is powered by a broad coalition of science, education, community, and cultural organizations:

Philadelphia Eagles

Philadelphia 76ers

Philadelphia Phillies

PHL250

City of Philadelphia

SciStarter

Franklin Institute

Academy of Natural Sciences

BirdingPhilly

Philadelphia Education Fund

Philadelphia STEM Ecosystem

NASA Night Sky Network

Dark Sky Network

Globe at Night

Lights Out Philly

Philadelphia250

Together, we’ve mobilized Philadelphians to protect birds, explore the universe, celebrate our nation, and contribute to 2.50 million Acts of Science in 2026.