Question

late in the 19th century, harvard astronomer edward pickering wanted to sort and catalog the thousands of star spectra that had been collected by the harvard observatory. he hired several women to do the work, paying them 25 cents a day. the most prominent of these women was annie jump cannon, who devised a classification system still used today. question: how are stars classified? 1. on the star spectra gizmo, turn on show labels and make sure neutral spectra is selected. select star 1 to see its absorption spectrum. what color is star 1? __________ how many lines do you see in the spectrum? __________

Explanation:

The text provides instructions on using the Star Spectra Gizmo to observe a star's characteristics for classification - turning on labels, selecting neutral spectra, and observing star 1's color and number of lines in its spectrum. However, it doesn't actually explain how stars are classified in general. But based on the given steps for the gizmo, these observations are part of the process to analyze star spectra which is related to classification.

Answer:

The question on how stars are classified is not fully answered in the given text. For the sub - questions about star 1:

• Color: No answer provided in given text.
• Number of lines: No answer provided in given text.