solar nebula, gaseous cloud from which, in the so-called nebular hypothesis of the origin of the solar system, the Sun and planets formed by condensation.
What is meant by solar nebula?
Where is the solar nebula?
Our solar system began forming within a concentration of interstellar dust and hydrogen gas called a molecular cloud. The cloud contracted under its own gravity and our proto-Sun formed in the hot dense center. The remainder of the cloud formed a swirling disk called of the solar nebula.
What is a solar nebula for kids?
What Is a Solar Nebula? Swedenborg's hypothesis was that there was a huge cloud of gas, called a nebula, around the Sun. … After the Sun was formed, the rest of the gases, ice particles, and space dust formed into the planets and the stars.
What causes a solar nebula?
The Sun and the planets formed together, 4.6 billion years ago, from a cloud of gas and dust called the solar nebula. A shock wave from a nearby supernova explosion probably initiated the collapse of the solar nebula. The Sun formed in the center, and the planets formed in a thin disk orbiting around it.
What does the solar nebula contain?
Mostly the stuff of the cloud was simple atoms of hydrogen and helium, but it was peppered here and there by more complicated elements forged in the internal furnaces and death explosions of older stars. Even as a new sun took shape at the center of the cloud, disturbances formed farther out.
What are Jovian planets?
Vocabulary. These are terms students may encounter while doing further research on the planets in the solar system: Jovian planets: The outer planets of our solar system: Jupiter, Saturn, Uranus, and Neptune.
How are planets formed NASA?
Planets emerge from the dense disk of gas and dust encircling young stars. … They emerge from the giant, donut-shaped disk of gas and dust that circles young stars. Gravity and other forces cause material within the disk to collide. If the collision is gentle enough, the material fuses, growing like rolling snowballs.
What is nebula Class 11?
What is Nebula ? A galaxy starts to form by accumulations of hydrogen gas in the form of a very large cloud called nebula.
What nebula is Earth in?
Helix Nebula The closest known nebula to Earth is called the Helix Nebula. It is the remnant of a dying star—possibly one like the Sun.