Recent research also reinforces the finding that the happenings in star clusters and their respective galaxies are very similar.

Paper Title: EXTENDED STELLAR SYSTEMS IN THE SOLAR NEIGHBORHOOD

Authors: Stefan Meingast, João Alves, and Alena Rottensteiner

First Author’s Institution: Department of Astrophysics, University of Vienna, Türkenschanzstrasse 17, 1180 Wien, Austria

Status: Accepted for Publication in Astronomy & Astrophysics. Open access on arXiv.

In this paper, the authors begin with an explanation of star clusters, the places where stars form, and their importance to galaxies. …


The USAAAO has released some exciting news regarding next year’s competition! This is an excerpt from the official USAAAO website.

“We’re excited to announce the schedule of USAAAO for the upcoming year!

Due to COVID-19, the whole competition will be online. USAAAO volunteers will be proctoring the exams. In order to accommodate different time zones, we will be offering 2 time slots. More details to follow.

Dec 2nd (2020)-Jan 27th (2021): Registration

January 30th: First Round Exam

March 20th: National Astronomy Competition

Sep 13th — Sep 21th: IOAA*

Registration will open on our registration page, so get ready and spread…


Paper Title: “An Increase in Small-planet Occurrence with Metallicity for Late-type Dwarf Stars in the Kepler Field and Its Implications for Planet Formation

Authors: Cicero X. Lu, Kevin C. Schlaufman, and Sihao Cheng.

First Author’s Institution: Department of Physics and Astronomy, Johns Hopkins University, 3400 N Charles St, Baltimore, MD 21218, USA

Status: Accepted to Astronomical Journal. Open access on arXiv

This article states the potential for small planets to form around dwarf stars. Scientists believe that this potential is likely related to the star’s metallicity.

The forward strides in the planet formation theory have allowed for a type of…


Paper Title: HABITABLE ZONES IN BINARY STAR SYSTEMS: A ZOOLOGY

Authors: Siegfried Eggl, Nikolaos Georgakarakos, Elke Pilat-Lohinger

First Author’s Institution: Rubin Observatory / Department of Astronomy, University of Washington, Seattle, 98015 WA, USA eggl@uw.edu

Status: Published in MDPI Galaxies. Open access on arXiv.

If you’re trying to look for another planet in the habitable zone of a star, this overview will be quite useful to you. A traditional habitable zone is defined as a region where the temperature is enough so that liquid water can exist near the surface of the planet, and therefore, possibly support life. When considering habitable…


Title: A Wide Orbit Exoplanet OGLE-2012-BLG-0838Lb

Authors: R. Poleski, B. S. Gaudi, Xiaojia Xie, A. Udalski, J. C. Yee, J. Skowron, M. K. Szymański, I. Soszyński, P. Pietrukowicz, S. Kozlowski, L.Wyrzykowski, K.Ulaczyk, C. Han, Subo Dong, K. M. Morzinski, J. R. Males, L. M. Close, A. Gould, R. W. Pogge, J.-P. Beaulieu, and J.-B. Marquette

First Author’s Institution: Department of Astronomy, Ohio State University, 140 W. 18th Ave., Columbus, OH 43210, USA

Status: Published in the Astronomical Journal of the AAS

Astronomers have recently detected a new exoplanet nearly 13,100 light-years from Earth, but how did they find it and…


Image Credit: NASA SOHO

If you’ve been through a storm, you may have gotten your power knocked out at one point or another. However, how often have you seen total power failure for a major part of a continent? Maybe once in a lifetime, such as the 1989 Quebec power outage.

The culprit of many of these widespread electricity flaws is none other than the same thing that allows life to thrive on Earth — the sun.

The sun is capable of putting out huge ejections of plasma into space, and some of these streams incidentally are detected on Earth. …


The space sciences are arguably the most underrated out of all areas of science in many cases. This is quite surprising since many children are fascinated and inspired by things “out of this world”, from mysterious black holes to the other worlds in our solar system.

The United States Astronomy and Astrophysics Competition Foundation seeks to motivate those high school students interested in Astronomy and Astrophysics by hosting competitions and encouraging the study of the contents presented in the IOAA syllabus. The Foundation gives students an opportunity to compete in a first-round competition, then those who pass the first round…


The IOAA International Board is organising Global e-Competition on Astronomy and Astrophysics (GeCAA) as an alternate educational event for the benefit of students who were due to participate in IOAA this year.

The event will be held in 2 categories, individual and group.

Individual category will have one test based on theoretical problems, one on the data analysis problems, one on observation related problems. The rounds for this category will be held on September 25, 26 and 27, 2020.

In group category, the participants will be grouped in mixed
international teams by the organisers and will be given a set of…

USA Astronomy Foundation

Hello, we are the USAAAO! We advance and promote astronomy and astrophysics education through competition and aim to spread interest in the space sciences.

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