This PDF by Nora Mills Boyd, Siska De Baerdemaeker, Kevin Heng,
and Vera Matarese is an explication of how the theory and observation balance
within astrophysics. Items under discussion include laboratory astrophysics, the
problem with the Hubble constant, and also how theory plays a game of
give-and-take with observation in stellar population synthesis. Discussions on
epistemological lessons extracted from gravitational-wave astrophysics are also
present, covering simulation practices, idealisations in computer modeling, and
verification of data. Discussing the philosophical implications of observational
black hole astrophysics and entity realism in extragalactic studies, it ends
with reflections by a theoretical astrophysicist, providing an all-encompassing
view into the foundations and methodologies that guide todays astrophysical
research.
Author(s): Nora Mills Boyd, Siska De Baerdemaeker, Kevin Heng,
Vera Matarese
Astrochemistry Lecture Note Prepared by Adwin Boogert Herschel Science
Center - NASA A short lecture note. Kind of a nice basic course on
astrochemistry, though: the chemistry of interstellar space, chemical reactions
in space, techniques for observing interstellar molecules, evolution of the
molecule and its implications for astrobiology.
Author(s): Adwin Boogert, NASA Herschel Science
Center
This is a lecture note by Prof. Jesse Kroll, focusing on chemical
transformations in trace species of Earth's atmosphere. The note highlighted how
human activity impacts both air quality and climate-from covering major concepts
such as photochemistry and ozone-depleting compounds to aerosol chemistry. The
note provides a comprehensive summary of what drives atmospheric chemistry, from
sources and sinks of greenhouse gases to names and processes. The paper is
designed for better understanding of the atmospheric processes concerning
anthropogenic influences and their implication in environmental science.