Skip to main content

Visit McDonald Observatory

StarDate

Main menu

  • Home
  • Our Programs
    • Stardate Radio
    • Program Calendar
    • StarDate magazine
    • SkyTips Email
  • Stargazing
    • Constellations
    • Moon phases
    • Sunrise & Sunset Calculator
    • Meteor Showers
    • Eclipses
    • Planet Viewing
  • Astro Guide
    • Image Gallery
    • The Solar System
    • Beyond the Solar System
    • AstroGlossary
  • Classroom
    • Lesson Plans
    • Activities
  • Media Center
    • Videos
  • Donate
    • Donate
  • Store
    • Shopping Cart
    • 2023 Sky Almanac
    • Subscribe to StarDate magazine
    • Premium Same-Day Audio Access
    • StarDate T-Shirts
    • Magazine back issues
    • Sponsor StarDate for a Day

StarDate logo

You are here

  • Home
  • Astronomical Firsts

Astronomical Firsts

  • Printer-friendly version

Keywords

  • Ancient Astronomy
  • Ancient Observatories and Monuments
  • Galileo Galilei
  • Hubble, Edwin
  • Mapmaking and Navigation
  • Mathematics and Physics
  • Star Catalogs and Charts
  • Timekeeping and Calendars

Search form

Today on StarDate

The Moon and the butting one

Subscribe

Keep up with everything in the sky with a subscription to our daily radio program, hosted by Billy Henry.

Order Now

For more skywatching tips, astronomy news, and much more, read StarDate magazine.

The one constant in the Universe: StarDate magazine

Sponsor

Support StarDate radio by sponsoring our program for a day. You'll get your name on the air (or the name of someone else you would like to honor) and on our web site.

Astronomy Gifts

Logo Hooded Sweatshirt

$34.95

Make a Contribution

StarDate depends on the support of listeners and astronomy enthusiasts like you. Please consider making a tax-deductible contribution to StarDate.

Support StarDate

  • About StarDate
  • Underwriting
  • SkyTips Sign-Up
  • Change mailing address
  • Privacy Policy
  • Copyright and Usage
  • Contact

StarDate is brought to you in part through the generous support of our underwriters.
Interested in underwriting? Let us know

 

FacebookTwitterYouTube

©2022 The University of Texas McDonald Observatory