Cards in this guide (12)
The hottest part of the sun
The very center of the core, where nuclear fusion is occurring;
millions of degrees.
Active magnetic eruptions that burst into space from the surface of the sun are called
What animal represented in this constellation was killed by Hercules
Which of these gases is present in the greatest percentage in the composition of the sun
These seem to occur in eleven-year cycles
The layer of the sun's atmosphere that is responsible for flares spicules and prominences
One of the first written accounts to mention constellations was the poem Phaenomena Who wrote this poem
During the solar nuclear reaction what four nuclei bond together
How can stars have different absolute brightness
Big stars are brighter than small stars, and hot stars are
brighter than cool ones.
What has the solid center portion of a comet
The center of a comet is called its nucleus.
Which constellation contains the famous butterfly star cluster
The cluster is in scorpius.
Which of these stars is a super giant
when does Halley's Comet passes by the earth every