Space Science Notes study notes for college and university students: the study of stars, planets, and other objects in space. Astronomers want to understand the universe and our planet’s.
AG Draconis. , AG Draconis (BD + 67 922, HIP 78512) is a variable star in the constellation Draco with apparent magnitude +9.75. It is very far away, at an indeterminate distance of about 8000 light years . AG Draconis is a symbiotic star, a very rare class of stars of which less than 200 representatives are known. Symbiotic stars are binary stars whose components … Read more
Achernar , Alpha Eridani . It is the ninth brightest star in the night sky, with a stellar magnitude of +0.58, and is the main luminary in the constellation Eridano. It is bluish-white, is located 140 light-years away and is 7 times and 4000 times brighter than the sun . Achernar is a very peculiar star because it is one of the flattest stars known. Observations indicate that its radius is almost 50% … Read more
All the matter that exists in the Universe is made up of particles. Each type of particle fulfills a different function. The interaction between the different types of particles makes the Universe as we know it possible. There are two classes of particles: fermions and bosons . Fermions make up the mass of matter. The bosons are responsible for applying the four … Read more
The matter of the Universe is ordered. The force of gravity makes matter clump together into structures. From the simplest, such as stars or solar systems, to gigantic walls of galaxies. Even so, the expansion of the Universe causes the different structures to move away from each other at great speed. The most distant structures are the … Read more
Template: Polaris Star Token . Is the name of the star α Ursae Minoris (α UMi 1 UMi), the brightest of the constellation of the little bear , with apparent magnitude +1.97. It is also called the Polar Star or North Star because of its proximity to the celestial north pole . Summary [ hide ] 1 Name 2 Pole Star 3 Physical characteristics 4 Polaris and the Beatles 5 See also 6 References Name The name of Polaris comes from the Latin Stella Polaris , literally “Polar … Read more
Nobody has imposed them, but the Universe seems to be governed by rules or laws that scientists have tried to discover throughout history. And in that they continue. Here are some of the fundamental laws that govern our Universe: Kepler’s Laws These are three laws about the movements of the planets formulated by the German astronomer Johannes Kepler in the … Read more
