Moon over Sequoia National Park

Moon

International Observe the Moon Night Is Here

International Observe the Moon Night is here. Step outside Saturday evening and admire our closest celestial neighbor with your family.

People, Places, and Events

Fall Astronomy Day 2018

Curious about astronomy? No plans for Saturday? Well, you’re in luck! Saturday October 13 is Fall Astronomy Day and your local amateur astronomical community has all sorts of fun things in store for you.

Celestial News & Events

Spring Astronomy Day 2018

Looking for something to do on Saturday? Make plans to celebrate Astronomy Day on April 21st!

2013 Astronomy Day celebration in Boston

People, Places, and Events

Spring Astronomy Day 2017!

Amateur astronomy clubs, planetariums, science museums, and parks celebrate Astronomy Day twice a year, when the public is invited to come learn about the sky and view through telescopes.

2013 Astronomy Day celebration in Boston

Celestial News & Events

Fall Astronomy Day: Saturday, October 8th!

Amateur astronomy clubs, planetariums, science museums, and parks celebrate Astronomy Day twice a year.

2013 Astronomy Day celebration in Boston

People, Places, and Events

Spring Astronomy Day 2016

Join your local amateur astronomy community in celebrating Spring Astronomy Day on May 14, 2016.

Young stargazer

Astronomy and Society

Celebrate Astronomy Day: April 25, 2012!

April 20th is Astronomy Day, when hundreds of astronomy clubs, observatories, museums, colleges, and planetariums worldwide host special family-oriented events and festivities that showcase the wonder and excitement of the night sky.

Astronomy and Society

Entry Form for S&T Astronomy Day Award

The latest version of the S&T Astronomy Day Award entry form is available on the Astronomical League's website.

Astronomy and Society

The S&T Astronomy Day Award

Each year, one club or organization is recognized for its successful efforts in promoting Astronomy Day.

Solar Astronomy

Astronomy and Society

Countdown to Astronomy Day 2006

Mark your calendars! This year's Astronomy Day festivities take place May 6th.

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