Special Dates
Astronomy Day is an annual event held on Saturday between mid-April and mid-May on or just before the first quarter Moon. But apart from this day, there are some other special dates that are related to astronomy. Such as Galileo Day, International Asteroid Day, Earth Day, International Day of Human Space Flight, and more. Here you'll learn what astronomy-related events exist and how to celebrate them.
Felicette, the First Cat in Space: How the World Almost Forgot the Feline Astronaut
63 years ago, France sent a stray cat into space. Learn the sad story behind the great space journey of the only cat in space!
Halloween Night Sky: Spooky Stargazing
Embrace the spirit of Halloween by exploring the spooky wonders of the cosmos, from demon stars to ghostly nebulae. Get all the cosmic treats this Halloween!
World Space Week 2026: Dates, Theme & How to Celebrate
Celebrate World Space Week 2026 on October 4–10! Explore the “Rocket Revolution” theme, activities for all ages, and the week’s best stargazing events.
Astronomy Day 2026: Celebrate on September 19
Astronomy Day returns on September 19, 2026! Discover what to see in the sky, how to celebrate, and why this year's event is extra special for Moon lovers.
International Observe the Moon Night 2026: Look Up on September 19
International Observe the Moon Night is September 19, 2026. Learn when to look, what lunar features to see, and how to join the worldwide celebration.
Cosmic Dogs: Dog Constellations, Stars & Space Pioneers
Meet the three official dog constellations, the Dog Star Sirius and its Pup, a dog-bone asteroid, and the dogs who pioneered high-altitude and orbital flight.
Cosmic Cats: Cat Constellations, Stars, Galaxies & More
Discover cosmic cats in the night sky, from the former Felis constellation and cat-named stars to the Cat’s Eye Nebula, Cat’s Paw Nebula, and feline galaxies.
Asteroid Day 2027: What Is It and How to Celebrate It?
Celebrate Asteroid Day on June 30! Learn new things about asteroids and join global efforts to protect our planet from potential threats.
International Day of Planetariums: A Look Back at 101 Years of Celestial Exploration
Searching for a new leisure time activity? Visit your nearest planetarium! In today's article, you’ll find everything you need to know about space theaters.
April 24: Space Day of China
Explore Space Day of China 2026, its official theme, history, and major milestones in China’s space program.