All igneous rocks form as magma or lava cools and solidifies. Intrusive igneous rock is a type of igneous rock that forms from magma, which means it forms completely underground. The magma that forms intrusive igneous rock cools much more slowly than igneous rock that forms above ground.
The star is a member of an eclipsing binary star system
Explanation:
A careful explanation about the measurement reveals that the star maintains a steady and apparent shape of brightness and at most of the time remains brighter.
With and usual intervals of about the 73 hours and then the star becomes contestant dimmer for about every toe hours and is due to the fact that the star is a member of the eclipsing system.
