stellar evolution
A Protostar’s Age Gleaned Only From Sound Waves
Precisely dating a star can have important consequences for understanding stellar evolution and any circling exoplanets. But it’s one of…
Astronomers Find Evidence of a Strange Type of Star
One has never been spotted for sure in the wild jungle of strange stellar objects out there, but astronomers now…
Stars Boil Before They Blow Up, Says NuSTAR
Supernovas are some of the most energetic and powerful events in the observable Universe. Briefly outshining entire galaxies, they are…
Is Eta Carinae Heading Toward Another Eruption?
Massive stars can devastate their surroundings, unleashing hot winds and blasting radiation. With a mass over 100 times heavier than…
Dazzling New Views of a Familiar Cluster
Wow. It’s always amazing to get new views of familiar sky targets. And you always know that a “feast for…
When Is a Star Not a Star?
When it's a brown dwarf -- but where do we draw the line? Often called "failed stars," brown dwarfs are…
Nearby Ancient Star is Almost as Old as the Universe
A metal-poor star located merely 190 light-years from the Sun is 14.46+-0.80 billion years old, which implies that the star is…
“Proplyd-like” Objects Discovered in Cygnus OB2
[/caption] The well known Orion Nebula is perhaps the most well known star forming regions in the sky. The four…
NSV 11749 – Born Again and Grown Old
[/caption] In 1996, a Japanese amateur astronomer discovered a new star in the constellation Sagittarius. Dubbed V4334 Sgr, astronomers initially…
Guest Post by Author Peter Shaver: Cosmic Time Scales
[/caption] Editor's note: Peter Shaver is the author of the new book "Cosmic Heritage – Evolution from the Big Bang…