A certain O-class star appears red from the Earth's surface. The absorption lines, however, do not look shifted towards red. Based on these observations, which of the following is a reasonable conclusion about this star?
W) It is moving away from the Earth very quickly
X) It is moving towards the Earth very quickly
Y) There is dust between Earth and the star
Z) There is dark matter between Earth and the star
✔️Answer:Y) THERE IS DUST BETWEEN EARTH AND THE STAR
🚀
Take Your Prep to the Next Level
Practice with interactive modes, adaptive testing, and detailed stats on our main app.