Vega and Rigel

Rigel

  In the history people of nearly every culture have looked at the stars and given names to shapes they saw, also they even invented stories. For example, the pattern that the Greeks named Orion (the Hunter) was also seen by the ancient Chinese who saw it as a supreme warrior  named Shen and native Americans of the California desert saw the same group of stars as a line of sure-footed mountain sheep.
  The patterns of stars seen in the sky are usually called constellations.
  Rigel is the one of the brightest star in the constellation of Orion in the night sky.  It is approximately twice as hot and  40.000 times brighter than our sun and it  is around 800 light years from Earth. Rigel is only around 8 million years old and has already  exhausted the supply of hydrogen in its core. Over the next few million years Rigel will expand to an even greater size as it becomes a red super giant and may eventually explode as a supernova and it will become the brightest object in the night sky apart from the moon.  

Image via astropixel.com

Other names;   Rigel, Algebar,  Elgebar, Beta Ori
Rational velocity; 25km/s
Mass;  17 solar mass
Surface temperature;  22.000 F
Radius;  33.73 million miles (78 solar radii)
Diameter; about 65 million miles (105 million km)


  Astronomers classify Rigel as a type B8 and have discovered it is part of 4-star system. Also it is part of the Winter Hexogen  and is visible from October through March each year.

Vega
Vega is a bright star located just 25 light-years from Earth. The star is 450  million years old and younger than our solar system approximately 4,6 billion years. Vega is the fifth-brightest star in the night sky.

EarthSky

Vega is seen in the summer sky in the Northern Hemisphere. The "Summer Triangle" consist the bright stars Vega, Deneb, Altair. Vega is at the top of the triangle. Vega forms a right angle between the two other stars. All three stars are extremely bright in region with few other bright stars. The way to find Vega is to use its right ascension and declination:
Right Ascension: 18h 36m 56,3s
Declination: 38 degrees 47 minutes 01 second.

ThoughtCo

The one of differences between Vega and Sun is color. Vega has spectral class of AoV which means blue-white combine hydrogen to make helium. Vega burns up more quickly than Sun.  
Vega is expected to be around 1 billion years, compared to the 10 billion years of our sun.
 In the 1850 Vega became the first star ever to be photographed.

Solarsystemquick.com

Vega will become a red giant in around half a billion years when it can no longer  fuse hydrogen in its core.
Vega is estimated to have a mass of around 2,1 times that of the sun.
Vega is estimated to have surface temperature of around 9,500C ( 17000F) which is almost as twice as hot as sun.

 Resources; https://lco.global/spacebook/what-are-constellations/

                            https://earthsky.org/brightest-stars/blue-white-rigel-is-orions-brightest-star

                            https://www.solarsystemquick.com/universe/rigel-star.htm

                            http://www.astronomytrek.com/star-facts-rigel/

                            https://www.thoughtco.com/vega-star-facts-4137641

                            https://www.solarsystemquick.com/universe/vega-star.htm

                            https://www.space.com/21719-vega.html