Thursday September 28, 2017 (Discussion – Galactic Superclusters; Video – HTUW Part 3; Continue Discovery Education Unit - Exploring Our Solar System, Concept – Planets and Moons)

How do galaxies take shape? The Launch Pad Thursday, 9/28/17 How do galaxies take shape? Gravity draws gas and dust clouds (nebulae). Nebulae further condense and form stars. Stars are in turn clumped together by gravity to form galactic shapes such as spirals and ellipses.

Remediation for Quiz 3 runs through tomorrow at 5:00 PM! Announcements Remediation for Quiz 3 runs through tomorrow at 5:00 PM!

S3 F1 F2 QUIZ 3 9/22 5:00 PM 9/25 9/28 Last Day Accepted Tomorrow Assignment Currently Open Summative or Formative # Date Issued Gone Missing Day Last Day Accepted QUIZ 3 S3 9/22 Tomorrow 5:00 PM Science TechBook Unit – Exploring Our Solar System, Concept – Characteristics of Our Solar System F1 9/25 Concept Completion Date: Yesterday Science TechBook Unit – Exploring Our Solar System, Concept – Planets and Moons F2 9/28 Next Monday

Video How the Universe Works: Alien Galaxy Part 3 – Black Hole in the Middle of the Milky Way Galaxy (6:56)

SLC Debrief - Part 3 (Notes should be taken during SLC Debriefs and kept in a section in your Science Binder) What is the diameter of the supermassive black hole at the center of our galaxy? What is a quasar? Where is the KECK telescope located? What accounts for galaxies not flying apart?

The Milky Way

Galaxies NGC 4565 NGC 4245

Galaxies UGC 8467 NGC 4676 (The Mice)

Galaxies UGC 8621 NGC 3615

Galactic Superclusters The Laniakea Supercluster (Laniakea; also called Local Supercluster or Local SCl) is the galaxy superclusterthat is home to the Milky Way, our galaxy, and 100,000 other nearby galaxies It was defined in September 2014, when a group of astronomers including R. Brent Tully of the University of Hawaii and Hélène Courtois of the University of Lyon published a new way of defining superclusters according to the relative velocities of galaxies. The new definition of the local supercluster subsumes the prior defined local supercluster, the Virgo Supercluster, now an appendage.

The Laniakea Supercluster https://www.youtube.com/watch?v=rENyyRwxpHo