Who is the free source of Vitamin D?

-


Who is the free source of Vitamin D? 

Answer:

 Sun

Star


The Sun is the star at the center of the Solar System. It is a nearly perfect sphere of hot plasma, heated to incandescence by nuclear fusion reactions in its core, radiating the energy mainly as visible light and infrared radiation. It is by far the most important source of energy for life on Earth.

Surface temperature: 5,778 K
Distance to Earth: 149.6 million km
Mass: 1.989 × 10^30 kg
Age: 4.603 billion years
Radius: 696,340 km
Moons: 3122 Florence, 130 Elektra

Layers

Want to know about Periods?

Comments

Post a Comment

Popular posts from this blog

UNIVERSE: A MISTERY

-
Image
UNIVERSE: AN UNREVEALED THEORY The universe is commonly defined as the totality of everything that exists Tudung all physical matter and energy, the planets, stars, galaxies and the contents of intergalactic space. The study of universe is known as Cosmology Cosmology = cosmos (universe) + logos (science) Galaxy  is a vast system of billions of stars, which also contains a large number as clouds (mainly of hydrogen gas) and dust, isolated in space from similar systems There are about 100 billion galaxies (10 galaxies in the universe, and each valaxy has, on an average, 100 billion stars (10 stars) So, the total number of stars in the universe is 10 stars The Milky Way Galaxy is the home of the Earth and our Solar System. It is spiral in shape Milky Way Galaxy was formed 5 billion years after the Big Bang Latest known galaxy is the Dwarf Galaxy. > According to the modern thought, universe can be classified into two parts namely-(a) Atmosphere and (b) Space > Origin of the univ...
Read more

PLANETS?

-
Image
PLANETS? Planet , broadly, any relatively large natural body that revolves in an orbit  around the Sun  or around some other star  and that is not radiating energy  from internal nuclear fusion  reactions. In addition to the above description, some scientists impose additional constraints regarding characteristics such as size (e.g., the object should be more than about 1,000 km [600 miles] across, or a little larger than the largest known  asteroid ,  Ceres ), shape (it should be large enough to have been squeezed by its own  gravity  into a sphere—i.e., roughly 700 km [435 miles] across, depending on its density), or mass (it must have a mass insufficient for its core to have experienced even temporary nuclear fusion). As the term is applied to bodies in Earth’s solar system, the  International Astronomical Union   (IAU), which is charged by the scientific  community  with classifying astronomical obj...
Read more

WHY IT IS CALLED "SOLAR" SYSTEM?

-
Image
  ON THIS PAGE 10 Things to Know About Our Solar System Our Solar System Why Is It Called The "Solar" System? There are many planetary systems like ours in the universe, with planets orbiting a host star. Our planetary system is named the "solar" system because our Sun is named Sol, after the Latin word for Sun, "solis," and anything related to the Sun we call "solar." Our planetary system is located in an outer spiral arm of the Milky Way galaxy. The Latest   NASA's Juno Reveals Dark Origins of One of Jupiter's Grand Light Shows Our solar system consists of our star, the Sun, and everything bound to it by gravity — the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune, dwarf planets such as Pluto, dozens of moons and millions of asteroids, comets and meteoroids. Beyond our own solar system, we have discovered thousands of planetary systems orbiting other stars in the Milky Way. Go farther.  Explore Our Solar System...
Read more