# Official Website: Telescope Array Project

**Type:** source
**Status:** Useful
**Confidence:** High
**Source Type:** Official Website
**URL:** https://www.telescopearray.org/
**Publisher:** Telescope Array Collaboration (University of Utah lead institution)
**Accessed:** 2026-06-19
**Updated:** 2026-06-19

## Summary

The official project website for the Telescope Array (TA), the largest ultra-high-energy cosmic-ray observatory in the Northern Hemisphere. Hosted by the collaboration with the University of Utah as lead institution.

## Useful Claims

- The Telescope Array is located in Millard County, Utah, west of Delta.
- The collaboration is led by the University of Utah and the University of Tokyo ICRR.
- The detector array covers hundreds of square kilometers using surface scintillation detectors and air-fluorescence telescope stations.
- The TAx4 expansion is underway to increase detector area for rarer ultra-high-energy events.
- The site documents the collaboration's publications, news, and technical specifications.

## Reliability Notes

Primary source from the collaboration itself. Technical claims and institutional affiliations are authoritative here. Specific measurement claims should be cross-checked against peer-reviewed publications (Physical Review Letters, Science) for independent validation.

## Related Pages

- [Telescope Array](telescope-array-ultra-high-energy-cosmic-rays.md)