Jon Voisey
Measuring the Moon’s Eccentricity at Home
Caption: View of the moon at perigee and apogee As a teacher, I'm always on the lookout for labs with…
Measuring the Coronal Temperature with Iron
This image of the solar corona contains a color overlay of the emission from highly ionized iron lines and white…
Spitzer Peers Into the Small Magellanic Cloud
This week at the AAC Conference, astronomers released a new image of the Small Magellanic Cloud (SMC, a dwarf galaxy…
Early Release Science from Hubble WFC3 at AAS Conference
The image above is a newly released image from the Hubble Space Telescope. The image shows a mosaic of a…
Arp’s Phantom Jet
[/caption] During the “Great Debate” of 1920 astronomers Herber Curtis and Harlow Shapley had a famous debate on the nature…
Probing the Explosive History of Eta Car
Caption: Eta Carinae as imaged by the Gemini South telescope in Chile with the Near Infrared Coronagraphic Imager (NICI) using…
New Studies on the Vela Star Forming Region
[/caption] This week at the AAS meeting scientists revealed two new studies on a star forming region in Vela. The…
Do Eruptions of P Cygni Point to a Companion?
The other day, I wrote an article on Luminous Blue Variables (LBVs) which made reference to P Cygni as a…
MN112 – A New Luminous Blue Variable Found From Its Nebula?
[/caption] Luminous Blue Variables (LBVs) are a rare class of extremely massive stars that teeter on the very edge of…
Galactic Building Blocks
The current view of galactic formation is that galaxies form from a "bottom-up" method. In this picture, small dwarf galaxies,…