Question

A scientist uses a telescope to observe the two stars. Which of these is the best conclusion about the images of the two stars as seen by the scientist? A: The images show the stars as they existed 7 years ago. B: The images show the stars as they existed 15 years ago. C: The image of 61 Cygni is more recent than the image of Proxima Centauri. D: The image of Proxima Centauri is more recent than the image of 61 Cygni.

Answer 1

they existed 15 years ago.

Step-by-step explanation:

Answer 2

B) The images show the stars as they existed 15 years ago

Step-by-step explanation:

Some 15 billion years ago the universe emerged from a hot, dense sea of matter and energy. As the cosmos expanded and cooled, it spawned galaxies