Star Formation

Star, any massive self-luminous celestial body of gas that shines by radiation derived from its internal energy sources. This article describes the properties and evolution of individual stars. Included in the discussion are the sizes, energetics, temperatures, masses, and chemical compositions of stars.

How are stars formed? In this article we'll explain stars and learn how stars are formed.

Star Formation: Nebula, Red dwarf, Red giant, Planetary Nebula, White dwarf, Supernova, Black dwarf, Brown Dwarfs, Neutron stars, Black holes.

Astronomers are excited to get their first look at a clump of gas they think is about to start forming stars. Unlike others seen, this one is "pristine," unaffected by the violent stellar winds and supernova shocks from other nearby stars.

Star - Formation, Evolution, Lifecycle: Throughout the Milky Way Galaxy (and even near the Sun itself), astronomers have discovered stars that are well evolved or even approaching extinction, or both, as well as occasional stars that must be very young or still in the process of formation. Evolutionary effects on these stars are not negligible, even for a middle-aged star such as the Sun. More massive stars must display more spectacular effects because the rate of conversion of mass into…

This spectacular image shows a region called G35.2-0.7N, which is known as a hotbed of high-mass star formation. The kind of stars that form here are so massive that they will end their lives as destructive supernovae. However, even as they form they greatly impact their surroundings. At least one B-type star — the second most massive type — lurks within the region pictured here, and a powerful protostellar jet that it is launching towards us is the source of the spectacular light show.

WASTED on Instagram: "The Antennae Galaxies (NGC 4038 and NGC 4039) collided gravitationally, forming a vast heart-like shape visible in space. Located 60 million light years away, they have been merging for a billion years, triggering star formation through colliding interstellar gases. Their iconic antennae structures and cosmic dance are expected to continue for another billion years."

The life cycle of a star

Hubble’s Advanced Camera for Surveys celebrates 20 years of discovery

Stellar evolution - or lifecycle? Essay Web As the title of this schematic drawing demonstrates astronomers frequently use the expression stellar evolution when actually talking about the lifecycles of stars. The choice of terminology is a matter of language preferences, convenient usages, the associations a given term raises in our minds. But ultimately choice of words is also related to its exact contents and the accuracy of the expression. Human evolution? Human evolution - or lifecycle?…