Which characteristics can be used to differentiate star systems? Select three options.
Choose the word from the drop-down menu that completes each sentence. A/An star system is made of two stars. A/An star system is made of no more than a few thousand stars. A/An star system is made of more than a million stars.
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Based on the information in the article, which title would be most appropriate?
Which characteristic is used to classify galaxies?
How are NGC 1427A and U different? How are they the same?
NGC 1427A is larger and has an irregular shape, while U is smaller and shaped like a pinwheel. Both are made of dust, gas, and stars.
Which ideas did you include in your answer? Check all that apply.
Which statement describes the image?
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