Michael S. P. Kelley

Associate Research Scientist
University of Maryland
Department of Astronomy
1113 PSC Bldg., 415
College Park MD 20742-0001

Office: 1207B Atlantic Building (wing 2)
Phone: 301-405-3796
(Not to be confused with Michael "NASA HQ" Kelley)

A Small Outburst of Comet 123P/West-Hartley

Jan 2019: We discovered a small outburst at comet 123P/West-Hartley with the Zwicky Transient Facility! This is the second outburst we've discovered, and the 10th cometary outburst that we've seen in ZTF data.

Read our telegram »

The Spitzer Space Telescope and a Survey of Cometary Activity

January 2015: With the Spitzer Space Telescope, we can survey how much carbon dioxide comets produce through their orbits, and assess its role in comet activity.

Read my blog post »


Grayscale image of a comet in a dense star-field.

As seen by the Zwicky Transient Facility, this image of 46P/Wirtanen shows the comet's large coma and a portion of the tail. The image is from a single ZTF CCD, and is nearly 2° across. Image credit: Caltech/Univ. Maryland/M. Kelley.

Cometary Science Newsletter

The Cometary Science Newsletter is a monthly newsletter dedicated to sharing and furthering cometary science. Read on-line at www.cometarysciencenews.org.