The answer is "have elliptical orbits"
The planets in our solar system including our home planet earth have an elliptical orbits instead of circular orbits. Because the circular orbits represents the perfect balance in velocity and gravity force. Planets differs in distance from the sun. Also, the planets are not measured in light years.
Explanation :
Edwin Hubble used a telescope to discover the movement of galaxies in 1929. He was an American Astronomer.
The telescope invented by him is called a Hubble telescope. It has a 2.4-meter mirror.
He gives the relation between the distance to a galaxy and its recessional velocity. This is known as the Hubble law. The relation is as follows :
where,
is recessional velocity.
is Hubble constant.
is distance.
<em>So, the given statement is True.</em>
It is actually inference because inference is using observation and background to reach a logical conclusion
Matter. I don't really know how to explain it. Sorry. But anyways, Hope this helps!