The photo at the top of this story (Credit: NASA / Kepler) shows the habitable zone (in green)
for different types of stars, meaning that liquid water could potentially exist on the surface.
This chemical cartography provides information about the formation and evolution of the Milky Way because the chemistry of stars encodes information about the gas from which they formed, and this gas is enriched in different elements
by different types of stars.
Spectra can be used to find the distances to distant galaxies, and the properties (such as temperature and chemical composition)
of different types of stars and galaxies.
«But it's not clear why
this different type of star formation should produce the initial mass function we observe.»
«Although globular star clusters were first discovered in 1665, it has taken more than 340 years to fully appreciate all
the different types of star clusters that are made in the Universe.»
This diagram shows typical average properties for
the different types of stars.
Its successor, K2, will survey a different patch of the sky and more and
different types of stars.
Proxima is
a different type of star, a very small M star, and its brightness is only 1 / 1000th of that of its more massive neighbors.
«In the future, this observing technique can be applied to
different types of stars to study their surfaces and atmospheres in unprecedented detail.