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This web page is designed to give everyone an idea of what our universe actually looks like. There are nine main maps on this web page, each one approximately ten times the scale of the previous one. The first map shows the nearest stars and then the other maps slowly expand out until we have reached the scale of the entire visible universe.

Cosmos Portal  is a gateway on the Web to astronomy and space science. We invite astronomy professionals to publish articles, blogs, news items, image galleries, videos, class notes, lectures, powerpoint presentations, links to other high quality websites or other educational material. 

The primary purpose of this web site is to share my astrophotography experiences and results with others. I started astrophotography using a webcam and 8" Celestron SCT in 2001.

Measurements of temperature fluctuations by the Wilkinson Microwave Anisotropy Probe (WMAP) indicate that the fluctuation amplitude in one half of the sky differs from the amplitude in the other half. We show that such an asymmetry cannot be generated during single-field slow-roll inflation without violating constraints to the homogeneity of the Universe. In contrast, a multi-field inflationary theory, the curvaton model, can produce this power asymmetry without violating the homogeneity constraint. The mechanism requires the introduction of a large-amplitude superhorizon perturbation to the curvaton field, possibly a pre-inflationary remnant or a superhorizon curvaton-web structure. The model makes several predictions, including non-Gaussianity and modifications to the inflationary consistency relation, that will be tested with forthcoming CMB experiments.

100,000 Stars is an interactive visualization of the stellar neighborhood created for the Google Chrome web browser. It shows the real location of over 100,000 nearby stars. Zooming in reveals 87 major named stars and our solar system. The galaxy view is an artist's rendition.

"THE WORLDS FIRST ASTRONOMICAL CLOCK IN THE DIGITAL AGE"

website features news, resources, and discussion boards about LISA (the Laser Interferometer Space Antenna), a space-based gravitational-wave observatory that will allow us to detect gravitational waves from massive black-hole mergers in the centers of galaxies, from the ultra-compact binary systems in our own Galaxy, and from many other sources. A joint ESA and NASA mission, LISA will create revolutionary research opportunities in astrophysics and fundamental physics.

It's a cute graphic, but not much more than that. You move the cursor and the simulated night sky moves in response - and it's a great example of how the Internet can take us in the wrong direction. Do you remember kids getting books and ... gasp ... going outdoors at night, looking upward and finding those constellations, instead of searching for them on an animation?

Information for those thinking of buying a home telescope