Variable Stars

Nancy Grace Roman Telescope is Getting an Upgraded new Infrared Filter

The Nancy Grace Roman Telescope just received a new infrared filter that will allow it to explore even more of…

9 months ago

TESS is Also Helping Astronomers Study Bizarre Pulsating Stars

NASA's TESS, or Transiting Exoplanet Survey Satellite has one main job: finding exoplanets. But it's also helping astronomers study a…

2 years ago

What are Cepheid Variables?

Discovered in the late 18th century, Cepheid Variable stars have become an important tool for measuring the size of the…

5 years ago

Messier 5 (M5) – The NGC 5904 Globular Cluster

In the late 18th century, Charles Messier was busy hunting for comets in the night sky, and noticed several “nebulous”…

6 years ago

Challenge Yourself! See an Astronomical Event that Only Happens Once Every 26 Years

Update: It’s off. This past weekend, the AAVSO issued Special Notice #395 calling off the campaign to observe Alpha Comae…

7 years ago

Astronomy Cast Ep. 337: Photometry

There's a lot you can learn by just staring at an object, watching how it changes in brightness. This is…

8 years ago

Seeing Red: Hunting Herschel’s Garnet Star

Quick, what’s the reddest star visible to the naked eye? Depending on your sky conditions, your answer may well be…

8 years ago

What’s Going On Inside This New Kind of Variable Star?

A new kind of variable star -- 36 of that type, in fact -- has been found in a single…

8 years ago

Weekly SkyWatcher’s Forecast: November 19-25, 2012

Greetings, fellow SkyWatchers! It's going to be a great week to study the Moon - and bright Jupiter is just…

9 years ago

Weekly SkyWatcher’s Forecast: September 24-30, 2012

"Shine on, shine on Harvest Moon... Up in the sky..." Oh! Howdy, fellow SkyWatchers! The seasons are most surely showing…

9 years ago