Which of the following is an indication that a planet may exist near a distant star
A. the star varies in temperature
B. The star has a very slight back and forth motion
C. the star has very strong gravity
D. Radio wave activity increases near the star
I think the answer is A
The answer is B👈
its b
its b
it's b i did the test
lo 223
To determine which of the given options indicates the presence of a planet near a distant star, we need to consider the methods used to detect exoplanets.
One of the most common methods is the radial velocity method. This method involves measuring the slight back and forth motion of a star caused by the gravitational tug of an orbiting planet. So, option B, "the star has a very slight back and forth motion," is indeed an indication that a planet may exist near a distant star.
Option A, "the star varies in temperature," is not necessarily an indication of a planet's presence. Variations in temperature can be caused by other factors such as stellar activity or intrinsic properties of the star itself.
Option C, "the star has very strong gravity," is not a direct indication of a planet since the strength of gravity depends on the mass of the star, not the presence of a planet around it.
Option D, "Radio wave activity increases near the star," does not provide information specifically related to the presence of a planet. Increased radio wave activity could be caused by various other phenomena.
Therefore, the correct answer is B, "the star has a very slight back and forth motion."