The southern autumn night sky is often referred to as the “wet quarter” because that’s where we find such constellations as Aquarius the Water-bearer; Pisces the Fish; and, most notorious of all, ...

What can star variability—changes in a star's brightness over time—teach astronomers about exoplanet habitability? This is what a recent study accepted for publication in The Astronomical Journal ...

Proceedings of the American Philosophical Society, Vol. 86, No. 3, Papers on Astronomy, Botany, Geology, Paleontology, and Zoology (Jul. 8, 1943), pp. 329-338 (10 pages) The variable stars occupy an ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. This article was originally published at The Conversation. The publication contributed the ...

For the past 10 years, under the guiding hand of Editor-in-Chief Professor John Percy (University of Toronto), the Journal of the American Association of Variable Star Observers (JAAVSO) has ...

I timed this column to coincide with a feature article in this issue about the American Association of Variable Star Observers (AAVSO), written by the organization’s director, Stella Kafka. If you ...

Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and Fundamental Forces from Imperial College London.View full profile Alfredo has a PhD in Astrophysics and a Master's in Quantum ...

Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and Fundamental Forces from Imperial College London.View full profile Alfredo has a PhD in Astrophysics and a Master's in Quantum ...

Astronomers using the Swiss 1.2-metre Euler telescope at ESO’s La Silla Observatory in Chile have found a new type of variable star. The discovery was based on the detection of very tiny changes in ...

This week, the variable star Mira reaches its highest point, roughly halfway up in the southern sky at around 10 p.m. local time. Although now nearly a month past maximum brightness, it should still ...