Love a rocket launch, a space documentary, or an excuse to look up at the stars? World Space Week 2026 runs from October 4 to 10, celebrating space science, technology, and their impact on life on Earth. This year’s theme, “Rocket Revolution,” puts the changing world of space launches in the spotlight.

Whether you’re an astronomy fan or simply curious about what’s beyond our planet, here are five facts to know.

1. The dates mark two milestones in space history

World Space Week takes place every year from October 4 to 10. Those dates commemorate two important moments:

• October 4, 1957: Sputnik 1, the first human-made satellite to orbit Earth, launched into space.
• October 10, 1967: The Outer Space Treaty entered into force, establishing a framework for the peaceful exploration and use of outer space.

One date marks humanity’s first step into orbit; the other highlights the importance of cooperation in space.

2. The 2026 World Space Week theme is “Rocket Revolution”

This year’s theme celebrates advances in launch systems that are changing access to space. Reusable rockets and new launch providers are creating more opportunities for organizations to send missions beyond Earth.

The theme also invites people to think about what these developments could make possible—from new scientific experiments to greater participation in space exploration.

3. World Space Week became an official annual celebration in 1999

The United Nations proclaimed World Space Week in 1999. The celebration recognizes how space science and technology can contribute to improving life on Earth.

It also encourages space education, inspires students, and promotes international cooperation. So it’s about more than astronauts and dramatic launches—it’s a chance to explore why space matters in our everyday lives.

4. It’s the world’s largest annual space event

World Space Week is recognized as the largest annual space event in the world. In 2025, organizers reported 50,000 events across 102 countries. Those figures are for last year’s celebration, not the final 2026 totals.

From classroom activities to public events, the week brings people together to celebrate space without anyone needing to leave Earth.

5. Astronaut Pikachu is joining the celebration

The European Space Agency and The Pokémon Company International have teamed up for World Space Week 2026, combining space education with Pokémon-themed activities at participating locations in Europe.

An Astronaut Pikachu plush even traveled to the International Space Station with ESA astronaut Sophie Adenot. It spent 67 days in orbit, from April 11 to June 17, 2026, completing approximately 1,040 orbits.

The collaboration includes special activities at participating museums and ESA sites in Europe, though availability may vary by location.

Make a little space for curiosity

You don’t need to be an astronaut to celebrate World Space Week. Watch a space documentary, try a simple astronomy activity, or spend an evening looking at the night sky. However you mark the occasion, let curiosity lead—and give yourself a reason to look up.