#turns #stars #brighter #sun
Liputan6.com, Jakarta – The sun is the center of the Milky Way solar system and the main source of energy for life on Earth. The sun is a large star consisting of gas that emits light from its internal energy.
According to the Encyclopedia Britannica page quoted on Tuesday (05/03/2024), there are tens of billions of trillions of stars that make up the observable universe, but only a small portion are visible to the naked eye.
A number of stars are known to emit very bright light in their respective constellations or sky patterns. The distance from Earth also varies, some are 97 light years to 640 light years from Earth.
Quoted from NASA’s Astronomy Picture of the Day page, Tuesday (05/03/2024), the following stars are brighter than the sun in the universe to date.
1. Sirius
Sirius is the brightest star in the universe. The star Sirius is also known as Alpha Canis Major, this is because Sirius is in the constellation Canis Major.
This star, nicknamed the Dog Star, is bluish white in color. Sirius is also often called the rainbow star because it often twinkles at night.
Sirius is 20 times brighter than the sun and is also twice as large as the sun. However, Sirius is about 8.7 light years from Earth, so it does not appear brighter than the Sun from Earth.
However, Sirius remains the brightest star in the night sky. Sirius is actually a twin star system in the form of Sirius A and Sirius B.
Sirius A is the brightest star, while Sirius B is about 10,000 times dimmer than Sirius A.
2. Canopus
The name of the second brightest star in the universe is Canopus. Canopus is also known as Alfa Cariane because it is the brightest star in the constellation Carina.
Canopus is about 313 years from Earth and has almost the same mass as the sun. Canopus is a yellow-white giant star that has a diameter about 71 times that of the sun.
Canopus’ surface temperature is about 7,350 Kelvin, making it a very hot star. Canopus is estimated to be around 100 million years old.
Canopus has a luminosity of about 150,000 times the luminosity of the Sun. The visual brightness is -0.74 and belongs to spectrum class A9II.
Canopus is used as a guide in spacecraft control because of its angular distance from the sun. This star also appears to contrast in brightness between nearby celestial bodies.
Canopus is the brightest star most easily visible in the Southern Hemisphere. It is now also in a period of development or evolution into a red giant star.
