Tuesday, February 2, 2016

Galaxies and the Expanding Universe

These links relate to the discovery that the universe is expanding, plus the birth of the Big Bang theory.

Vesto Slipher discovered that Andromeda was coming toward us, and other objects were receding.

http://www.roe.ac.uk/~jap/slipher/

http://www2.lowell.edu/workshops/slipher/

Henrietta Swan Leavitt discovered a way to determine how far away other galaxies are.

http://www.famousscientists.org/henrietta-swan-leavitt/

http://www.encyclopedia.com/topic/Henrietta_Leavitt.aspx

http://www.womanastronomer.com/hleavitt.htm

http://www.windows2universe.org/people/leavitt.html

Edwin Hubble determined that more distant galaxies were moving faster, and that meant the universe itself was expanding

https://www.spacetelescope.org/about/history/the_man_behind_the_name/

https://cosmology.carnegiescience.edu/timeline/1929

Georges Lemaitre: Father of the Big Bang
http://www.amnh.org/education/resources/rfl/web/essaybooks/cosmic/p_lemaitre.html



Wednesday, January 13, 2016

Take a Tour of Hubble’s Mind Blowing High Definition Snapshot of the Andromeda Galaxy


Millions and millions of suns scattered like grains of sand, each one a system of dust and maybe planets like our own. And as the video scans into the galactic center—the sheer number of stars overwhelms the darkness. A fabric of light.