The Most Famous Stars We Know!
The Most Famous Stars We Know!
We see those twinkling lights on our night sky called stars are perhaps the most hyped objects in space. Space has many more mind-blowing objects that take our breath away. But stars, they are one of a kind.
These objects form when interstellar gas and dust, known as “nebulae,” start spinning. When the clumps form and the temperature rises to 10 million degrees Celcius, a nuclear fission reaction starts. This forms a star.
Famous Stars
The Sun
Sun is the most famous star in our sky as it fuels our solar system. It is a G-type star that formed 4.6 billion years ago. Our sun is a yellow-white dwarf star that will continue its hydrogen-burning phase for another five billion years or more.
After its fuel finishes, it will fuse helium, causing the sun to expand. Later, the sun may form a planetary nebula and will shrink down to become a white dwarf. This white dwarf will continue to cool down for another ten to fifteen billion years.
a Centauri System
Also known as the Alpha Centauri System, it contains all the stars closest to the sun. Usually visible from the Southern Hemisphere, these stars are also visible from the most southerly parts of the Northern Hemisphere.
These stars are 4.3 light-years away from us, and the brightest of all is Alpha Centauri. a-Centauri is a double star containing a G-type main-sequence star which is similar to the sun. It is called Alpha Centauri A, and its companion is Alpha Centauri B which is a K-type star, a bit dimmer than the sun and will less mass.
The third star is Alpha Centauri C, also called Proxima Centauri, which is the closest to us.
Sirius (a Canis Majoris)
Sirius is the brightest star in our sky and also the brightest star in the constellation Canis Major, the Big Dog. It is approximately 8.3 light-years away from earth. Sirius has its companion Sirius B and but is brighter than its partner.
Sirius A is an A-type star, living on the main sequence. Its mass is twice that of the sun and is twenty-five times more luminous. In contrast, Sirius B is a dimmer white dwarf star and is less massive than the sun.
In ancient times, ancient civilizations used Sirius to mark the change in seasons and provided navigation on long sea journeys.
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