### star:

New star
* All new stars change hydrogen to helium through nuclear fusion.
* are formed in the nebulae.
* become harder and harder to form, so eventually all the stars left are low-mass stars.
* continue to be born deep inside molecular clouds in galaxies
  - form along outer fringes of the spiral arms
* form at the rate of about one solar mass per year
  - from the collapse of interstellar clouds
  - inside interstellar clouds
* rise slowly over the eastern horizon, while stars in the west slowly go below the horizon.
+ Red giant, How a star becomes a red giant
  * All new stars change hydrogen to helium through nuclear fusion. In a normal star, like our Sun and all other main-sequence stars, this change happens at the very center of the star. Sooner or later, almost all of the hydrogen at the center has changed to helium. This causes the nuclear reaction to stop. The center will start to get smaller due to the star's gravity. This makes the layer just outside the center get hotter.

Newborn star
* Most newborn stars have the potential to make planets.
* Some newborn stars are massive, hot, and bright, so they make the spiral arms appear bright.
* illuminate the surrounding gas with ultraviolet radiation.

Nova
* are located in space
  - smoked salmon
  - software
* includes sections.

Old star
* are red or yellow giants or red dwarfs, hence the color.
* dominate at the shorter wavelengths.
* tend to be large and relatively cool - hence the red colour.

Older star
* produce more stellar wind than younger stars.
* tend to be redder, but space dust can interfere with color perception from Earth.

Pentacle
* are magazines
* complete system for on-line tuning of focus and astigmatism of electron zmicroscopes.
* represent the element of earth.

Pentagram
* are part of pentacles.
* regularly appear on tombstones, as do hardened wax and talismans.

### star:

Red giant
* Some red giants pulsate rhythmically, others flare up in irregular bursts.
  * A 'red giant' very big star that weighs about one-half to ten times as much as our Sun. Red giants get their name because they appear to be colored red and they are very large. Many red giants could fit thousands and thousands of suns like ours inside of them. Mira, Aldebaran, Arcturus and Gamma Crucis are red giants.
* are have hydrogen shell burning and eventually helium core burning
  - large reddish or orange stars which are running out of their nuclear fuel
  - much larger, more massive, and more diffuse than main sequence stars
  - some of the most luminous, and largest stars in the universe
  - very luminous but rare
* have extremely dense cores and large, diffuse envelopes.

Red star
* are less hot than white or blue stars
  - the coolest, yellow stars are in the middle and blue stars are the hottest
* emit primarily red light.

Serpent star
* Some serpent stars are hermaphrodites, with both ovaries and testes
  - quite colorful and show a range of coloration from one individual to another
* are seen coiled snakelike around branches of gorgonians.

Several star
* are also visible, and can easily be distinguished by cross-like diffraction spikes.
* show unusual fluorescent emission by very hot molecular hydrogen.

Small star
* are cool and red.
* burn fuel slowly and last a long time.
* can only convert hydrogen to helium
  - produce certain elements up to sulfur, by the alpha process

Smaller star
* burn their fuel slowly, but tend to send out huge flares of harmful radiation.
* fuse hydrogen to helium slower and live longer lives.
* live calmly for hundreds of millions of years and die much more quietly

Supergiant
* Most supergiants end their lives catastrophically as a supernova.
* are about as common as the sun
  - the largest and most luminous type of star
* have even greater luminosities and diameters
  - higher luminosities and diameters