Homework Hotline Instructions
To access the Homework Hotline, please call the school’s telephone number (357-3914),
choose option 3 to enter the Homework Hotline and enter your teacher’s box number.
After the teacher’s message is played concerning homework assignments, you will have the following options:
To repeat this assignment message press 4.
To return to the previous menu to dial another teachers homework mailbox press 5.
Otherwise you may hang up. Thank you.
c ose X
| astronomical object | atmosphere of earth | chemistry | chronology of the universe | galaxy | natural satellite | natural science | nebula | physics | planet | star | supernova A galaxy is a gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and dark matter. The word galaxy is derived from the Greek galaxias, literally "milky", a reference to the Milky Way. Galaxies range in size from dwarfs with just a few billion (109) stars to giants with one hundred trillion (1014) stars, each orbiting its galaxy's center of mass. Galaxies are categorized according to their visual morphology as elliptical, spiral and irregular. Many galaxies are thought to have black holes at their active centers. The Milky Way's central black hole, known as Sagittarius A*, has a mass four million times greater than the Sun. As of March 2016, GN-z11 is the oldest and most distant observed galaxy with a comoving distance of 32 billion light-years from Earth, and observed as it existed just 400 million years after the Big Bang.