A raging wildfire is "mostly holding" at Kitt Peak National Observatory, which remains too dangerous for astronomers to verify how much of the area was damaged, officials said in an update June 20.

This dome houses the 1.3-meter McGraw Hill telescope at the MDM Observatory, which is about a mile down the road from the NSF-funded Kitt Peak National Observatory.

No buildings burned but astronomers are concerned heat may have warped the dome of the Vatican Advanced Technology Telescope.

The Mayall four-meter telescope, the most prominent structure atop Kitt Peak, is visible from up to 50 miles away. The dome is 18 stories tall and has a double-shell construction that can ...