1.Scientists believethat our galaxy is abarred spiral galaxy A barred spiral galaxy is a rotating, flat disk of stars, gas and dust with a bar-shaped center made of stars.2.…

1.By Carla Bridges 2.  5.3.2 Observe and describe that stars are like the sun, some being smaller some being larger, but they are so far away that they look like points…

GENERAL Questions GI A cobalt-60 teletherapy machine has an activity of 10,135 curies and decays by emission of beta-minus particles. If the emission of these electrons is…

Slide 1 Slide 2 Massive Stars live shorter lives. Low mass stars live longest. 1.Gravity contracts the Hydrogen gas 2. Gas Spins 3. Gas Heats 4. Protostar Stage 5. Fusion…

Slide 1 Life story of a star Micro-world Macro-world Lecture 20 Slide 2 Life Cycle of Stars Recycling Supernovae produce - heavy elements - neutron stars - black holes Martin…

Slide 1 Science Olympiad Solar System Div B 2007 Joshua Haislip Slide 2 Event Parameters Time Limit: around 50 minutes Team: two students Materials allowed: Four-function…

Slide 1 Origin of the elements and Standard Abundance Distribution Clementina Sasso Lotfi Yelles Chaouche Lecture on the Origins of the Solar Systems Slide 2 Nucleosynthesis:…

Slide 1 Life story of a star Micro-world Macro-world Lecture 20 Life Cycle of Stars Recycling Supernovae produce - heavy elements neutron stars black holes Martin Rees -…

Chapter 30 Section 2 Handout Stellar Evolution 1 Why are astronomers not able to observe the entire life of any star? Because a star typically exists for billions of years.…

Lecture 26: The Bizarre Stellar Graveyard: White Dwarfs and Neutron Stars Stellar Corpses White dwarf : inert core left after a low-mass star has ceased nuclear burning and…