The Maunder Minimum refers to a period of sustained solar__________ from 1645 until about 1715.
Blog
Hydrogen lines are strongest in class A stars.
Hydrogen lines are strongest in class A stars.
The Sun’s mass is over a million times that of the Earth.
The Sun’s mass is over a million times that of the Earth.
The nearest star system to our Sun, Alpha Centauri, is still…
The nearest star system to our Sun, Alpha Centauri, is still over a parsec distant.
Stars of the main sequence, like our own, are all converting…
Stars of the main sequence, like our own, are all converting __________ into helium.
If a binary is detected by periodic shifts in its spectral l…
If a binary is detected by periodic shifts in its spectral lines, it is a __________ binary.
On the H-R diagram, the bright blue stars that dominate the…
On the H-R diagram, the bright blue stars that dominate the naked-eye sky lie:
Combining a star’s proper motion and its distance allows us…
Combining a star’s proper motion and its distance allows us to determine its transverse velocity.
The absolute magnitude of the Sun is about __________ .
The absolute magnitude of the Sun is about __________ .
What is the meaning of the solar constant?
What is the meaning of the solar constant?