Visit
- - - Visit the Green Bank Science Center
      
      Everything you need to know about visiting Green Bank including our tours, the Exhibit Hall, our Gift Shop, and the Starlight Café.
Education
- - - Educational Programs
      
      In this section you will discover our educational offerings here at Green Bank Observatory. Be part of the science!
- - - Students forming a human pyramid in front of the 40 Foot Educational Telescope
  - - Student Research
    - Radio Astronomer For a Day
  - - Try it at home
    - Field Trips (Day visits)
  - - Outreach
    - Education Resources
  - - Scout Weekends
Science
- - - Science at the Green Bank Observatory
      
      Learn about our scientific programs, meetings and workshops, our staff, and more
Users Portal
- - - Users Portal Page
      
      In this section observers will find information for using our telescopes.
Media
- - - Media and Media Relations
      
      Find news, updates, and information for the media – including information on media visits and public photography on site.
About
- - - About the Green Bank Observatory
      
      Learn more about our history and our facility in the sections below.

Category: GBT proposal call – current

27A Semester

The Green Bank Observatory (GBO) Call for Proposals for the 2026B semester has closed on Wednesday, February 4, 2026 at 17:00 EST (21:00 UTC). Please come back here in early July 2026 for information on the 2027A Call for Proposals.

February 4, 2026