This is a schematic showing the forming solar system.
Click on image for full size
How the Solar System may have formed from a spinning cloud
Scientists think that the solar system formed out of a spinning cloud of hydrogen and helium gas.
Because the cloud was spinning, it flattened into a frisbee shape, just like a ball of pizza dough becomes flat when a chef spins it in the air. The planets and the sun started to form after the cloud of gas became a flat disk.
As the cloud flattened, the gaseous material inside was forced to begin changing into solid form.
These little particles of solid material were soft and sticky, and further clumped together to form larger balls of solid material whenever they touched each other, somewhat the way "silly putty" does. Eventually only a few large clumps of this material remained in the forming solar system, and they became the core of "protoplanets".
Shop Windows to the Universe Science Store!
Learn about Earth and space science, and have fun while doing it! The games
section of our online store
includes a climate change card game
and the Traveling Nitrogen game
You might also be interested in:
As shown in this picture, while they were forming in the solar nebula, the nucleii of the planets-to-be (called protoplanets) drew material to themselves from the cloud of gas and dust around them. The...more
The position of the planets in the solar nebula greatly affected their 1. size and 2. composition. This is because of the effect of how cold it was in the nebula. 1. The nebula was a lot warmer close to...more
Besides methane, Uranus' atmosphere contains even more complex molecules such as ethane gas. (These gases are similar to the exhaust gases that come out of cars on earth). These molecules form layers of...more
The mesosphere of Uranus is a region of balance between warming and cooling. That essentially means that nothing happens there. Except for diffusion, the atmosphere is still. Upper reaches of the atmosphere,...more
As on Earth, the atmosphere of Uranus consists of a troposphere, stratosphere, mesosphere, and thermosphere. The troposphere is the region where the visible clouds are to be found. The stratosphere, as...more
On Uranus, as on Jupiter, the winds in the belts and zones blow first in one direction, then in the opposite direction. Wind blows east in a belt, and west in a zone. The clouds rise up in a belt, and...more
The clouds on Uranus, like Jupiter, are divided into belts and zones. On Uranus the belts and zones are hard to find. The left picture shows the north pole of Uranus. In this picture only the smog of...more