Create an account
sphere of light; the surface layer of the sun; the layer visible to the observer on Earthni
the sun's atmosphere that has a colorful layer of gases that surrounds the sun's photosphere; visible only through a monochromator
a vapor blanket that surrounds the chromospheres and extends to about 249,000miles from the surface of the sun; visible only during a total solar eclipse
the blocking out of the sun's light that occurs when the moon comes between the sun and the earth
the obscuring of the moon that occurs when the earth comes between it and the sun; the moon is temporarily darkened as it passes through the earth's shadow
the pressure of atmospheric or compressed air; the total weight of air on some particular place on earth
a form of oxygen with three atoms of oxygen in its molecule instead of the two atoms found in in molecules of normal oxygen gas
a light visible on the horizon on especially dark and clear nights; cast by ions created when solar rays strip electrons from electrons from atoms of gases in the upper atmosphere
small solid pieces of rocky debris traveling through space; many meteoroids are fragments broken off asteroids
an atom that is either positively charged because it has lost some or all of it electrons, or negatively charged because it has picked up one or more extra electrons
a steady stream of subatomic particles speeding outward from the sun and through space at a million miles per hour
light display seen near the poles caused by the collisions of particles from the solar wind with molecules of air
the first planet discovered in modern times. It was discovered by Sir Wm Herschel. It rotates on it's side.
Please allow access to your computer’s microphone to use Voice Recording.
Having trouble? Click here for help.
We can’t access your microphone!
Click the icon above to update your browser permissions and try again
Reload the page to try again!Reload
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Please upgrade Flash or install Chrome
to use Voice Recording.
For more help, see our troubleshooting page.
Your microphone is muted
For help fixing this issue, see this FAQ.
Star this term
You can study starred terms together