Astronomers measure it by predicting with the stars and using scientific tools
Earth has an ozone layer in atmosphere. It is present in the stratospheric region. Other planets which have oxygen in their environment might have ozone.Some planets like earth do. Others might have.
Planets don't have planets. The Sun has planets, and planets have moons.Dwarf planets might orbit around each other, but this answer uses the correct definition of the term planet, which does not include Pluto or Charon.
there isn't actually a reason for "what are planets for" but they might be for life forms. planets are not for anything really, they just got made by gravity.
no there is not, if so there might be from the outer planets like saturn uranus or neptune definetely
The opposite of the verb measure might be not to measure, or to guess.
i think there might be quadrillions of planets with life on
there might well be life but there is no live
If by gas you mean an atmosphere, there are no planets with an atmosphere anywhere similar to Earth.
what planet's resources might come close with earth
You can't convert a square measure to a linear measure. You might convert it to square meters, or to square kilometers.You can't convert a square measure to a linear measure. You might convert it to square meters, or to square kilometers.You can't convert a square measure to a linear measure. You might convert it to square meters, or to square kilometers.You can't convert a square measure to a linear measure. You might convert it to square meters, or to square kilometers.
because it is ugly
the one that paul comes from