Galaxies
It has an arm rotating around its center.
Is this a spiral galaxy?
The property of stars that scientists use to determine the temperature of a star. W
What is color?
The only planet that has water in all three phases
What is Earth?
An explanation that states all matter and energy exploded from one point and has been expanding apart ever since.
What is the Big Bang Theory?
Ellipses are like flattened circles, that don't have a center, but rather have TWO of these
What are foci?
These galaxies are classified into 4 major types.
What are spiral, lenticular, irregular, and elliptical galaxies?
The most common elements in which stars are composed of.
What is Hydrogen and Helium?
The planet with no moons, a thick atmosphere of Carbon Dioxide and Sulfuric Acid, and day that is longer than its year, and it also rotates in the direction opposite of earth.
What is Venus?
Another evidence that Edwin Hubble used to show that all galaxies were moving away from us and away from each other.
What is red shift?
Shows that a star or galaxy is moving towards the earth or the earth is moving towards a star or galaxy.
What is Blue Shift?
The Sombrero galaxy is a ________________
What is a lenticular galaxy?
Huge, arching columns of gas between the magnetic field of sunspots on the Sun.
What is a solar prominance?
This is what all the planets have in common?
What is "revolve around the sun?"
As absolute magnitude increases in a star, so does its surface temperature.
What is the relationship shown on the H-R Diagram?
Kepler's 1st Law states that planets move about the sun in this type of orbit
What is an ellipse?
The bulge of a spiral galaxies contain ____ stars.
What are old stars?
The layer of the Sun next to the corona.
What is the chromosphere?
These are the terrestrial planets. `
What are Mercury, Venus, Earth, and Mars?
One of the evidences for the Big Bang Theory that was discovered by accident by Bell Laboratories while testing an antennae.
What is cosmic background radiation?
For a perfect circle, e=?
What is 0?
Nearly _____ percent of the galaxies closest to the Milky Way are spirals.
What is 70%?
The joining of two nuclei of hydrogen atoms to form helium with extreme amounts of energy being released.
What is nuclear fusion?
This planet is half the size of Earth, has a thin atmosphere, has polar ice caps made of frozen carbon dioxide, and possible exploration in the far future.
What is Mars?
The theory that places the sun at the center of the universe.
What is the Heliocentric theory?
the point in an orbit where a planet is farthest away from the sun
What is aphelion?