My Cosmic Address
Big Idea:
Everything in the universe is nested inside something bigger. Understanding where you fit in that structure is one of the most humbling and awe-inspiring things a person can do.

Materials:

• 5 sheets of paper or cardstock (different colors help)
• Scissors
• Markers
• A glue stick or brass brad
• Optional: a photo of the learner to paste on the smallest circle

What to Do:Step 1: You
Cut the smallest circle. Have your learner draw themselves or write their name on it. "This is you. You are part of the universe, made of the same elements stars cooked up billions of years ago."

Step 2: Earth
Cut a slightly larger circle and place the first inside it. "You live on Earth, a rocky planet covered in water and wrapped in air. It holds everything and everyone you know."

Step 3: The Solar System
Cut a larger circle still. "Earth is not alone. It travels around the Sun along with seven other planets and billions of smaller objects. Together, that is our solar system."

Step 4: The Milky Way
Cut an even larger circle. "Our Sun is just one star among 200 to 400 billion stars in a single galaxy. Our galaxy is called the Milky Way, and light takes 100,000 years to cross it."

Step 5: The Universe
Cut the largest circle. "The Milky Way is just one of at least two trillion galaxies in the observable universe. This is your address: you, on Earth, in the Solar System, in the Milky Way, in the universe."

Step 6: Stack and Connect
Layer the circles from largest to smallest and connect them with a brad or glue. Write the name of each layer on its circle. Zoom in and out together, flipping from universe down to the learner and back again.

Caregiver’s Tip: 3D Element
If you want to add a 3D element you can use plastics cups or anything else that can be “nested” inside of each other to show that the Universe literally "contains" the other things.

What's Really Happening (Caregiver Explanation):
This activity gives a concrete, tactile sense of the nested structure of the cosmos. One of the hardest things for any person to hold in mind is scale. That the Sun is one of hundreds of billions of stars in one galaxy, and that galaxy is one of trillions. The nested circles make that abstract fact physical and personal. The key takeaway is that the same processes that formed stars and galaxies eventually led to planets, life, and you.

Digging Deeper:
After completing the basic cosmic address, learners can also continue mapping outward:
Me → Earth → Solar System → Milky Way Galaxy → Local Group → Virgo Supercluster → Laniakea Supercluster → The Observable Universe

Have them draw this as a series of nested circles, labeling the approximate size of each level (Earth: 12,756 km diameter; Solar System: about 287 billion km across; Milky Way: about 100,000 light years; Local Group: about 10 million light years; Laniakea: about 520 million light years; Observable Universe: about 93 billion light years across). Then ask: at what point does the scale stop feeling real to you? Write about why human brains struggle to comprehend these numbers and what tools scientists use to even measure distances that large.

Research the actual size of each layer and add the measurements to the circles. Try to put them in perspective: if Earth were the size of a period on this page, how big would the Milky Way be?