Cosmology Science by David Dilworth

Explore the Whole Night Sky – Interactively

Posted on May 12, 2011 by David

Ever want to explore the whole night sky ?

Whole Night Sky

Here you go thanks to Nick Risinger—
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Posted in Basic Science, Education, Fun, News | Tagged App, Whole Night Sky | 2 Comments

Earth from Orbit – Live Video

Posted on May 12, 2011 by David

Live video of our Earth from orbit (from the International Space Station or ISS courtesy of NASA)

Earth from Orbit
Credit NASA

http://www.ustream.tv/channel/iss-hdev-payload

And here’s the International Space Station ground tracking position to you can tell where on the earth it is. https://web.archive.org/web/20180509213552/http://iss.astroviewer.net/

Here’s a backup in case the NASA website is down: ISS Tracker

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Posted in Basic Science, Education, Fun | Tagged Great Salt Lake, International Space Station, ISS, NASA | 3 Comments

New Record for Directly Measuring Astronomical Distances beyond our Local Supercluster – 450 million light years – with only 9% uncertainty

Posted on February 19, 2011 by David

The new record for the farthest object whose distance was directly measured is 450 million light years with an uncertainty of no more than 9 percent.

Our Milky Way galaxy is only 100,000 light years across. 450 million light years is more than four thousand times the diameter of our galaxy. Our “local” Supercluster centered on Virgo is only 150 million light years across – one-third of the new distance measurement record.

This was set by the world’s largest telescope, the Very Large Baseline Array telescope (VLBA) which extends from Hawaii to New Hampshire, and boasts a resolution a hundred times sharper than the Hubble Space Telescope.
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Posted in Basic Science, Distance Measuring | Tagged farthest object, galaxy rotation, Hubble Space Telescope, Measuring Distances, mili-arc-second resolution, New Record, VLBA | Leave a comment

News: International Astronomical Union has no Definition for Big Bang

Posted on February 2, 2011 by David

IAU has no Definition for Big Bang

3 Quarks Daily Semi-Finalist Logo

“…the [Big Bang] definition is a mess.” – Prof. P. James E. Peebles, Princeton University, Feb. 2011

News: (Carmel, California) The world’s most widely respected astrophysics organization, the International Astronomical Union (or IAU), has affirmed that it has no definition for any Big Bang model.

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Posted in Basic Science, Big Bang Models, Contest, Education | Tagged Big Bang, definitions, IAU, International Astronomical Union, LCDM | 21 Comments

Rubber Rulers: Fundamental Astrophysics Distance Tool Not Constant

Posted on January 14, 2011 by David

News: A fundamental astrophysics distance tool called Cepheid stars are newly discovered to vary in brightness and mass with age.

Cosmological Distance Measuring Sticks “Ladder” and “Standard Candles”

“Everything crumbles in cosmology studies if you don’t start up with the most precise measurements of Cepheids possible,” said Cepheid research follow-up study lead author Pauline Barmby, of the University of Western Ontario, Canada.

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