The Cosmos
Stars, galaxies, nebulae, and cosmology
Also fundamental physics with possible astronomical or cosmological implications
Tutorials:
Big Bang
Inflation
The Cosmic Microwave Background
The Cosmic Dark Ages
Dark Matter
Dark Energy - For a more technical discussion go here.
Ask the Experts: What are dark matter and dark energy, and how are they affecting the universe? Measuring Stellar & Galactic Distances (difficult!)
Supernovas
Supernovas & Pulsars
Black Holes
Pulsars
Cosmology: the Observable Universe (moderately technical)
Cosmology (very difficult!)
May 11, 2011
"When examining clusters of galaxies, astronomers often find massive elliptical galaxies lurking at the centers. In some of these, long filaments of gas and dust extend outwards from the core."
May 11, 2011
"Astronomers discovered two stars that are set to collide and produce a new star."
May 10, 2011
"Structure exists on nearly all scales in the universe. Matter clumps under its own gravity into planets, stars, galaxies, clusters, and superclusters. Beyond even these in scale are the filaments and voids. The largest of these filaments is known as the Sloan Great Wall. This giant string of galaxies is 1.4 billion light years across making it the largest known structure in the universe. "
May 10, 2011
"In a rare interview, the physicist Stephen Hawking discusses his work, aliens and living with A.L.S."
May 9, 2011
"ESA's Herschel infrared space observatory has detected raging winds of molecular gas streaming away from galaxies. Suspected for years, these outflows may have the power to strip galaxies of gas and halt star formation in its tracks."
May 8, 2011
"The theory of general relativity is as relevant to us today as it was when it was formulated, as a discovery about space-time reveals"
May 7, 2011
"A new paper does just this, discovering a new planetary nebula in hopes of mapping the chemical abundance of the galaxy"
May 7, 2011
"Astronomers watch as wake-up call rouses slumbering monster"
May 4, 2011
"Possible evidence for WIMPs reported, supporting claims of Italy-based experiment"
May 7, 2011
"An Italian research group has for years trumpeted a cyclical ebb and flow in particulate activity that the researchers ascribe to dark matter. But support for the claim has been hard to come by"
