Vocab 1
System of organizing time that defines the beginning, length, and divisions of the year
Calendar
All of space and everything in it
Universe
Small spacecraft that brought the first Americans to the moon
Eagle
Large explosion that occurs when a supergiant runs out of fuel
Supernova
Areas of gas on the sun's surface that are cooler than the areas around it
Sunspots
When an object comes between the sun and a third object, casting a shadow
Eclipse
The distance light travels in one year
Light-Year
The two astronauts who were the first men on the moon
Buzz Aldrin and Neil Armstrong
Where 90% of all stars fall on the HR Diagram
Main Sequence
Inner layer of the sun's atmosphere, the layer we see in images of the Sun
Photosphere
The apparent change in position of an object when viewed from different places
Parallax
Brightness of stars as seen from Earth
Apparent Brightness
The first human in space
Yuri Gagarin
Spinning Neutron Star
Pulsar
Galaxy with no shape and typically smaller than other galaxies
Irregular Galaxy
Darkest part of a moon's shadow during a solar eclipse
Umbra
Moment when the moon passes directly between Earth and the Sun
Solar Eclipse
The name of Alan Shepard's spaceship
Freedom 7
Where the hottest but least bright stars are on the HR Diagram
Bottom Left
Active young galaxy with a huge black hole at its center
Quasar
Device that breaks light into colors and produces an image of the resulting spectrum
Spectrograph
This occurs when the noon sun is directly overhead at the equator. Provide the two days of these occurrences
Equinox. Spring is March 21. Autumnal is September 22.
How many times did the Friendship 7 orbit Earth
3
Star system in which one star blocks light from another
Eclipsing Binary
The three layers of the sun's interior from innermost to outermost
Core, Radiation Zone, Convection Zone