After her PhD, Speck remained at
University College London as a
postdoctoral fellow. In 1999 she moved to the
University of Illinois at Urbana–Champaign, where she worked in the astronomy department. She moved to the
University of Missouri in 2002, where she started to build the astronomy program. She developed courses in
cosmochemistry for students from all departments. In her early years at the
University of Missouri, Speck organised a public outreach program called
Cosmic Conversations. Speck joined the
University of Missouri as a visiting assistant professor in fall 2002. She became a "regular" assistant professor in 2004 and an adjunct professor of geology in 2007. She got tenure and promotion to associate professor in 2008 and was made director and professor of astronomy in 2009. Speck only intended on the
United States temporarily, but found that it was a good fit with her research. Her research focuses on the study of infrared light especially as it relates to
circumstellar dust. Mass-loss from stars is driven by radiation pressure on dust grains. She used the
Spitzer Space Telescope to study space dust in the spiral galaxy
Messier 74. She found that space dust formation is effective in supernovae, using up 5% of their heavy elements. Speck was described by
PBS as the "scientist in the forefront of educating the public" about the
solar eclipse, and was appointed co-chair of the National Total Solar Eclipse Task Force. She worked with the
NASA Heliophysics Science Division to share information about the eclipse.
Academic service and advocacy Speck is responsible for mentoring
University of Missouri students who are interested in studying astronomy. Speck was named after
Angela Davis, and has always been interested in inclusion and equity. She has also served as Chair the User Committee of the
National Optical Astronomy Observatory and the
Kitt Peak National Observatory. ==Recognition==