observatory

Earthwalk Day 1405 (28 November 2025), 14,236 km: Mount Graham International Observatory November 28, 2025

Earthwalk Day 1375 (28 October 2025), 13,938 km: Fred Lawrence Whipple Observatory October 28, 2025

Earthwalk Day 1359 (12 October 2025), 13,801 km: Kitt Peak National Observatory October 12, 2025

Earthwalk Day 1269 (14 July 2025), 12,645 km: Palomar Observatory July 14, 2025

Earthwalk Day 1250 (25 June 2025), 12,460 km: Big Bear Solar Observatory June 25, 2025

Earthwalk Day 1221 (27 May 2025), 12,132 km: Mount Wilson Observatory May 27, 2025

Earthwalk Day 1053 (10 December 2024), 10,825 km: Lick Observatory December 10, 2024

Earthwalk Day 1043 (30 November 2024), 10,725 km: Stanford Dish November 30, 2024

Earthwalk Day 884 (24 June 2024), 8786 km: LIGO Hanford Observatory June 24, 2024

Earthwalk Day 550 (26 July 2023), 5358 km: Sanford Underground Research Facility July 26, 2023