astronomy

NASA

Astronomers in Arizona and worldwide are running a “planetary defense drill” to practice how to deal with an asteroid impact. It’s the first time they’ve used a real asteroid. KNAU’s Melissa Sevigny reports.

NASA's Goddard Space Flight Center/University of Arizona

A spacecraft guided by Arizona scientists will swing around Earth tomorrow, changing its trajectory to put it on course to study an asteroid next year. KNAU’s Melissa Sevigny reports.


NASA/JPL/Space Science Institute

The Cassini spacecraft mission ends tomorrow after two decades in space. A Flagstaff scientist on the mission team says Cassini transformed our knowledge of Saturn and especially its strange moon Titan. KNAU’s Melissa Sevigny spoke with Randy Kirk of the U.S. Geological Survey from Pasadena, California, where the team has gathered to witness the spacecraft’s final moments.


Courtesy

The array of telescopes on Anderson Mesa south of Flagstaff will soon be able to detect surface features of distant stars in more detail than any other telescope in the world. Astronomer Gerard van Belle is the director the Navy Precision Optical Interferometer.


Melissa Sevigny

Today’s full solar eclipse was the first in 100 years to stretch from coast to coast in the U.S. Millions of people flocked to the 70-mile-wide path of totality, and one of them is KNAU’s science reporter Melissa Sevigny. She’s on the line with me from Madras, Ore., which was in the center of the path of totality.


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