Science of Space

1. dark spots on the surface of the photosphere
3. infalling gas rebounds when it strikes the hard surface of a neutron star, causing an outward explosion.
7. groups of the brightest stars named after animals, mythical characters or everyday objects
10. shift in stars appearance caused by the motion of the observer as observed from Earth.
11. distance light travels in one year; 9.461x1012 km
12. measure of a star’s energy output from the surface of the star per second. Start apparent magnitude and how far it is from Earth.
14. combination of lightweight, atomic nuclei into heavier nuclei; such as hydrogen fusing into helium
16. Star Resistance to being squeezed close together creates a pressure that halts the collapse of the core.
18. most stars appear here, run diagonally from the upper-left corner where hot, luminous stars are represented to the lower left corner, where cool, dim stars are represented.
19. The center when the cloud contracts, its rotation forces it into a disk shape with a hot condensed center.

2. Pulsing pattern of light from a star.
4. how bright a star appears to us on Earth.
5. violent eruptions of particles and radiation from the surface of the Sun.
6. beginning of a star when a cloud of interstellar gas and dust collapses on itself due to gravity.
8. hole star so big as it collapses, the gravitational pull is so strong no light can escape.
9. arc of gas that is ejected from the chromosphere; gas that condenses in inner corona and rains back to the surface.
10. Larger than a light year used to measure items in space 3.26 ly or 3.086x1013 km
13. splitting of heavy atomic nuclei into smaller, lighter nuclei; uranium into lead
15. how bright a star would be at equal distances from the observer.
17. Star when only 2 stars are gravitationally bound together and orbit a common center mass