A large portion of the star's angular momentum is dissipated as a result of mass loss through the stellar wind.

Surface patches with a lower temperature and luminosity than average are known as starspots.

Photodissociation rates are important in the study of the composition of interstellar clouds in which stars are formed.

Planet HD 209458b is a gas giant with a close orbit around a star in the constellation Pegasus.

Astrovirus infection is not usually a severe situation and only in some rare cases leads to dehydration.

Coreopsis lanceolata, the Lance leaved coreopsis, is a species of coreopsis (Tickseed).

Coreopsis maritima, the sea dahlia or beach coreopsis, is a plant species of the genus Coreopsis in Asteraceae.

Cichorieae (sometimes Lactuceae) is a tribe of plants in the family Asteraceae that includes 100 genera and more than 1,600 species.

In a main sequence star such as the Sun, the lowest level of the atmosphere is the thin chromosphere region, where spicules appear and stellar flares begin.

Intergalactic space takes up most of the volume of the Universe, but even galaxies and star systems consist almost entirely of empty space.

The blue and red photometers (BP RP) are used to determine stellar properties such as temperature, mass, age and elemental composition.

Recent research shows the pivotal role of the stellate cell, a cell type that normally stores vitamin A, in the development of cirrhosis.

So, if a star starts its life off with much more mass than the mass of the Sun, it's going to end its life by exploding and leaving behind these beautiful supernova remnants that we see here.

It is thought to be less than 20 million years old and contains 26 red supergiant stars, the largest grouping of such stars known.

The star then evolves into a degenerate form, recycling a portion of its matter into the interstellar environment, where it will contribute to the formation of a new generation of stars with a higher proportion of heavy elements.

And doing this for 14 billion years, we end up with this picture, which is a very important graph, showing relative abundances of chemical elements in sun like stars and in the interstellar medium.

This issue was partially resolved in the late 1990s when new computer simulations, which included the effects of mass loss due to stellar winds, indicated a much younger age for globular clusters.