AU - Astronomical units - Distance from the Earth to the Sun. Approx 93 million miles
Planets like HD 189733 b, sometimes called "hot Jupiters" are one of the most common types of planets to be detected, largely because they are the easiest to detect. Such planets likely form at a great distance from their parent stars, but their orbits decay, bringing them extremely close to their stars. Hot Jupiters often slowly lose their atmospheres.
planets'
planets
no
Yes. Often, threats in any form are interpreted legally as a form of assault. In written form, it just provides concrete evidence.
It is a form of shorthand and therefore written quickly
Planets have layers because of the gases that form in the solar system.
None Stars are gas Planets are solid
No. Planets form by a process called accretion, which is driven by gravity. Nobody creates planets.
solar systems
No
A gas cloud. It must contain dust to form planets. (And lots of hydrogen to form a star.)