Lowell Observatory


Pluto’s largest moon Charon has a dark red splotch on its north pole. In a new study published in the journal Nature, a planetary scientist at Lowell Observatory in Flagstaff explains why.

The Perseid meteor shower peaks late tonight and early tomorrow morning. From the Arizona Science Desk, Melissa Sevigny reports on why this year is expected to be extraordinary.

Johns Hopkins University Applied Physics Laboratory

Physicist Tom Krimigis designs scientific instruments for space; they’ve gone to every planet in the solar system. He’s the only person in the world with that achievement. Krimigis came to the United States from Greece at the start of the Space Age, and later led the Applied Physics Laboratory at Johns Hopkins University. He was recently in Flagstaff for an event at Lowell Observatory and spoke with KNAU’s Melissa Sevigny about his half-century tour of the solar system.

Adam Block, Mt. Lemmon SkyCenter, UA

Three Flagstaff astronomers are part of a team that’s found a giant planet orbiting a surprisingly young star. Before this discovery, scientists believed big planets could only form around old stars.


Astronomers have found a tiny moon hidden behind the dwarf planet Makemake in the outer solar system. Lowell Observatory in Flagstaff was part of the discovery team.