GitHub Satellite is the European edition of GitHub's flagship conference, GitHub Universe, featuring keynotes from GitHub leadership and breakout sessions with open-source project maintainers, engineering teams, and leaders using software innovatively. The event offers early bird ticket sales until March 7, with a call for proposals open for potential speakers until March 3, inviting them to share their insights with over 600 attendees. For sponsorship opportunities, interested parties are encouraged to contact GitHub directly via email.