march 26, 2014 in your journal, title it “name that galaxy” # 1-8. get with your partner (s)...
TRANSCRIPT
March 26, 2014
In your journal, title it “Name that Galaxy” # 1-8.Get with your partner (s) from yesterday and decide if
the picture represents:Spiral Shaped Galaxy
Elliptical Shaped Galaxy
Irregular-Shaped Galaxy
Science Journals - 3-26-14
• Please draw this diagram into your journal.
The Dark Horsehead Nebula Arne Henden , US Naval Observ., Flagstaff, Image Processed by Al Kelly
IMAGES FROM ASTRONOMY TRANSPARENCIES
The Dark Horse Head Nebula
The Witch Head Nebula Gary Stevens
IMAGES FROM ASTRONOMY TRANSPARENCIES
The Witch Head Nebula
The Rosette Nebula T. A. Rector, B. Wolpa, M. Hanna (AURA/NOAON/NSF)
IMAGES FROM ASTRONOMY TRANSPARENCIES
The Rosetta Nebula
The Crab Nebula from VLT FORS Team, ESO
IMAGES FROM ASTRONOMY TRANSPARENCIES
The Crab Nebula from VLT
AVERAGE STARS
Average Stars form from a nebula. They produce their own heat and light by nuclear reactions. These stars live for billions of years before becoming a red giant.-
AVERAGE STAR…. Our Sun
RED GIANTBefore the end of life of an average star, it
swells up into a red giant before losing its outer layers in an explosion that creates a planetary nebula. A planetary nebula is NOT the same thing as a stellar nebula. A planetary nebula is near the end of an average star’s life, before it turns into a white dwarf.
PLANETARY NEBULA
A planetary nebula is NOT the same thing as a stellar nebula. A planetary nebula is near the end of an average star’s life, before it turns into a white dwarf.
Planetary Nebula
Planetary Nebula: Helix Nebula
WHITE DWARF
White Dwarfs are small and hot and are the shrunken remains of an average size star. Their nuclear energy supplies have been used up, and this is the last stage of the life cycle.
Artist’s Depiction of White Dwarf passing in front of a small red star
Dragonfish Nebula
• This infrared image from NASA's Spitzer Space Telescope shows the nebula nicknamed 'the Dragonfish.' This turbulent region, jam-packed with stars, is home to some of the most luminous massive stars in our Milky Way galaxy
MASSIVE STAR
Massive stars are the brightest stars that form from a nebula. They are white or blue in color. They can have masses 10-150 times that of the Sun (1 solar mass), but they live for less than a million years.
MASSIVE STAR
• An image of the Wolf-Rayet star R136a1, the most massive star known
RED SUPERGIANT
When a massive star has used up all of its nuclear energy, it swells up to 1000 times the diameter of the Sun.
SUPERNOVA
When gravity overcomes the nuclear energy in a red supergiant, the star begins to collapse, leading to a massive explosion that can remain visible for months.
BLACK HOLE
Sagittarius A* is the black hole at the center of the Milky Way galaxy.
Life Cycle of a Star
Note down this definition -
Our Sun →
