The Sun is an example of a yellow dwarf, also known as a main-sequence star. When a star begins its main sequence life, it is fusing hydrogen to helium within the core. Throughout the life cycle, the core begins to be depleted of hydrogen. As the composition of the core changes, ...
Sirius-A is a white main sequence star (A1V) that is about twice the size of our Sun. This isn’t very massive, relatively speaking. The extreme brightness from our point of view then comes not so much because it is a particularly bright star, but rather because it is only ...
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Vega is a main sequence star in spectral class A. This means that it is currently in a life phase where it converts hydrogen to helium for fuel and...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can answer your ...
Is Algol a red giant? Algol is a binary system consisting of a 3.7 solar mass main sequence star anda 0.8 solar mass red giant. How accurate is the North Star? So if you travel to the north, the North Star climbs progressively higher the farther north you go. When you head south, th...
The Sun, the 12 brightest stars of the Northern Hemisphere and the white dwarf companion stars to Sirius and Procyon are shown. Photo courtesy of NASA In 1924, the astronomer A. S. Eddington showed that the luminosity and mass of a star were related. The larger a star (i.e., more...
Pretty much every single state has a song written about it. That includes Wisconsin! I'll bet you'll never guess what it is and who it's by.
1e). However, the Sirius Red staining and α-SMA immunofluorescence staining results suggested that a HFD for 12 weeks did not significantly induce liver fibrosis (Additional file 1: Fig. S1a, b). Together, the above results confirm that feeding HFD to mice for 12 weeks successfully induced...
1862: Alvan Graham Clark discovers Sirius B, the companion star to Sirius. (Sirius? Fawkes? J.K. Rowling apparently was a big fan of names associated with January 31.) 1865: Congress passes the 13th Amendment, abolishing slavery, and submits it to the states for ratification. 1929: The ...