Because they all condensed out of the same cloud of spinning dust and gas.
Jupiter Neptune
The planet that most extrasolar planets resembles Jupiter.
Jupiter(apex)
Most of the confirmed Exoplanets are larger gaseous planets with large masses. These are easier to detect and confirm due to their size. They most resemble Jupiter, although many are thought to be much larger than our largest planet.
Mars
The inner planets such as Mars, Earth or Mercury. these are too small to identify in other systems and too close to the star.
An explosion disturbs the gas and dust in the nebula.
They were formed in supernovae.
That is called a "black hole".
Because ice cubes are less dense than water.
A blowing of a balloon best describes the BIG BANG best
The car does get cleaned.
Stars like our sun and hydrogen bombs produce energy through nuclear fusion.
star of one stellar mass, red giant, planetary nebula, white dwarf
They don't understand how redshift affects stars.
Pressure and gravity
full moon
light from the they orbit makes it difficult to locate extrasolar planets with telescope