The Galactic Inquirer

Interstellar Communications

Advancing Astronomical Literacy via Student Writing Contests

It is tempting to say that any well-educated person should know what it takes to be scientifically literate.  But what does scientific literacy really involve?  Given that scientific literacy is a key goal of most science education standards and frameworks, considerable ink has been dedicated to utilizing the term in pedagogical papers.  

Astronomical Meeting in South Africa Makes History

Africa’s astronomical debut has come at an opportune time, as a multitude of facilities and projects have taken root across the continent in the service of astronomical questing. 

!!Astronomical Science Writing Contest!!

Co-hosted by The Galactic Inquirer, a free online journal on diverse astronomical topics, the American Astronomical Society, North America’s largest organization of astronomers, the International Astronomical Union’s Office...

How to Talk to Aliens

If we ever make contact with an alien civilization, how will we understand what they’re saying? That’s the question that preoccupies John Elliott of...

Interstellar Communications

Introduction: It took less than two billion years for our Milky Way Galaxy to emerge from the chaos of the Hot Big Bang some 13.8...

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Multi-Spectral Imagery of the Multi-phase ISM in M33

We investigate star formation in the Sc(s) II-III galaxy M33 by analyzing eight prominent HII regions using multi-wavelength data from the Spitzer Space Telescope and optical imagery. Results indicate that dust emission is a compact tracer of high-mass star formation, while PAH and H-alpha emissions decline more slowly with galactocentric radius.

Dispatches from the Cosmos — Winter 2025

Just like the dust that stubbornly besmirches your computer monitor, bookcase, and ancestral credenza, cosmic dust is now recognized to have a multiplicity of origins.  For decades, astronomers thought that aging red giant stars produced most of the dust responsible for obscuring and reddening our views of nebulae and more distant stars ...

Sticking Close to Home #3 — Forming Planets

To form a solar system, the literature says that in a simulation like this we can ignore the gravity of the Sun and just concentrate on the interaction of the objects in the protoplanetary disk.The gas, dust and other objects rotate around the forming Sun in Keplerian orbital motion...

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Surfing The Auroral Cascade: Quantitative Constraints on Oxygen Forbidden-line Emissions and Exciting Electron Velocities

The formula for collisional excitation of the atoms responsible for auroral emission can explain why green auroras from excited oxygen atoms can occur at relatively low altitudes, but red auroras from these same atoms are constrained to higher altitudes of lower density. The same formula also suggests much lower electron velocities (~100 km/s) than are required to excite the oxygen atoms to the required metastable levels for subsequent emission (~1000 km/s).

Statistical Properties of Fast Radio Bursts from the CHIME/FRB Catalog 1: The Case for Magnetar Wind Nebulae as Likely Sources

Fast Radio Bursts are flashes of radio emission lasting for several milliseconds. The time of arrival of signals depends on the radio frequency, called the dispersion measure (DM), which depends on the environment through which the signals travel, specifically the number of free electrons in their path. Very few FRBs have matches with sources observed at other wavelengths (Wikipedia - Fast Radio Burst).

Advancing Astronomical Literacy via Student Writing Contests

It is tempting to say that any well-educated person should know what it takes to be scientifically literate.  But what does scientific literacy really involve?  Given that scientific literacy is a key goal of most science education standards and frameworks, considerable ink has been dedicated to utilizing the term in pedagogical papers.