Accessibility.

Keyboard navigation

• Use Tab and Shift+Tab to move between links and controls. A visible outline shows the current focus.
• Use the Skip to content link at the beginning of a page to reach its main content.
• Press Enter to follow a link, and Enter or Space to activate a button. Use the arrow keys to change a launch-plan radio selection.
• Press Escape to close an open dialog or navigation menu. Focus returns to the control that opened it.
• Comparison tables can be focused and scrolled horizontally when space is limited.

Display and motion

You can enlarge the page using your browser zoom. The interface follows your device’s reduced-motion and high-contrast preferences. Use Pause timer to stop the launch countdown display updating; Resume timer brings it up to date.

Privacy preferences

The Cookie settings button opens an accessible preferences dialog. Analytics and affiliate referral attribution are optional. You can dismiss the initial notice without granting consent.

Assessment status

Accessibility improvements and automated checks are part of our development process. A complete RGAA audit has not yet been completed, and full RGAA compliance has not been established. Automated scores alone do not establish compliance.

The technical reference for this work is the RGAA accessibility criteria.

Report a barrier

If something prevents you from using the site, please visit our contact page. Include the page URL, the action you were trying to complete and, if you wish, the browser or assistive technology you use. Please avoid sending sensitive personal information.