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.
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.
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.