Slide 1Science Olympiad, and the Citizen Sky Project Donna L Young National Event Supervisor for Astronomy Lead Educator, Chandra X-ray Center E/PO Office Author, Variable…

1. Sky Safari of the Constellation Andromeda 2. Labelled All-sky View 3. Caldwell 23 (NGC 891) – T1 hm Spiral Galaxy Distance 30 million LY Diameter 120,000 LY Discovered…

1. Sky Safari of the Constellation Andromeda 2. Labelled All-sky View 3. Caldwell 23 (NGC 891) – T1 hm Spiral Galaxy Distance 30 million LY Diameter 120,000 LY Discovered…

1. The M31 Velocity Vector.III. Future Milky Way-M31-M33Orbital Evolution, Merging, and Fate of the SunarXiv:1205.6865v1 [astro-ph.GA] 31 May 2012Roeland P. van der MarelSpace…

European Incubators in Silicon Valley: the M31 case Aldo Cocchiglia, CEO – M31 USA Stanford Engineering School, January 3 2011 M31 is the code name for Andromeda galaxy…

Slide 1 Astro 10-Lecture 13: Quiz 1. T/F We are near the center of our Galaxy 2.Cepheid variable stars can be used as distance indicators because a) They all have the same…

Slide 1 Introduction to Astrophysics Lecture 17: Cosmology: the expansion of the Universe Slide 2 Cosmology Cosmology is the study of the Universe as a whole. It attempts…

Slide 1 Slide 2 Galaxies GALAXIES Slide 3 Stars are not randomly sprinkled throughout the universe. Most astronomers agree that there are about 100 billion galaxies in the…

Slide 1 Optical Telescope Slide 2 Faint Light Astronomical objects are distant and faint. –Effectively at infinity Light collection is more important than magnification.…

Slide 1 Class 21 : Other galaxies The distance to other galaxies Cepheid variable stars. Other methods. The velocities of galaxies Doppler shifts. Hubble’s law. The morphology…