Vocabulary
Cloud of gas and dust in space
What is a nebula?
Two stars that revolve around each other
What are binary stars?
A pulsar sends out these
What are radion waves?
The most common constellations
What are the zodiac?
This holds a nebula together
What is gravity?
Spinning neutron star
What is a pulsar?
Stellar system with three stars
What are triple stars?
He was the first to discover ellipses
Who is Johannes Kepler?
The two types of star clusters
What are open and globular?
A dozen to a few thousand stars make up this cluster
What is an open cluster?
Figures and shapes visually connecting widely spaced groups of stars
What are constellations?
Elongated oval shape
What is an ellipse?
This is observed around a black hole
What is radiation?
These give galaxies their shape
What are star clusters?
A few thousand to millions of stars that are densely packed
What is a globular cluster?
The three stages of a protostar
What are becomes hot, fusion starts, star forms?
This can happen after supernova explodes
What is a black hole?
Group of stars held together by gravitational attraction
What are star clusters?
Example of a binary star
What are Sirius A and B?
Smallest constellation in the sky. It is found in the Southern Hemisphere.
What is Crux (or Southern Cross)?
During the main sequence, hydrogen fuses with this
What is helium?
Stars near the poles
What are circumpolar stars?
A planet orbiting a star other than the sun
What is an exoplanet?
Example of a triple star
What are Alpha Centauri A and B or Proxima Centauri?
Star pattern visibility depends on these two factors
What are location and orbit?
These change from season to season
What are star locations?