1. in a series circuit, as light bulbs are added, the voltage at the battery increases/decreasees/remains the same
2. in a series circuit, as light builbs are added, the current at the battery increases/decreases, remains the same.

The seven sisters, seven stars located more than 400 light-years away in the taurus constellation can be seen here with venus and another constellation, orion. the seven stars stay grouped together but seem to move, like the planet venus. why do stars seem to move like planets in the night sky?