Protoplanetary Disk

A protoplanetary disk is a rotating circumstellar disk of dense gas and dust surrounding a young newly formed star, where planets are believed to form. The protoplanetary disk is composed of gas and dust, and extends outward from the central star to a radius of several hundred astronomical units (AU). The gas in the disk is primarily composed of hydrogen and helium, while the dust is made up of silicates, carbon, and ice. The disk is heated by the central star, causing the gas and dust to emit radiation in the infrared spectrum. Over time, the dust particles in the disk begin to stick together and form larger bodies, eventually leading to the formation of planetesimals and planets.
Your Previous Searches
Random Picks
  • Gauge Bosons: In the context of space and astronautical engineering, gauge bosons are elementary particles that mediate the fundamental forces of nature, including the electromagnetic force, weak nuclear force, and strong nuclear force. These particles a ... Read More >>
  • Data Integrity: Data integrity refers to the accuracy, consistency, and reliability of data throughout its entire lifecycle. In the context of space and astronautical engineering, data integrity is crucial for ensuring the success and safety of missions. T ... Read More >>
  • X-ray: X-rays are a form of electromagnetic radiation with wavelengths shorter than ultraviolet light. They are produced by the collision of high-energy electrons with a metal target. In space and astronautical engineering, X-rays are used for a v ... Read More >>
Top News

Orionids meteor shower is this weekend: Where and when to watch its peak...

Orionids meteor shower is this weekend: Where and when to watch its peakgo.com...

News Source: ABC News on 2024-10-18

Acting or hosting, Travis Kelce wants to continue to pursue a showbiz career. Bu...

Travis Kelce is the host of “Are You Smarter Than a Celebrity?”...

News Source: ABC News on 2024-10-09

Now is a great time to see Saturn in all its ringed glory...

My first sight of Saturn through a telescope inspired my love of space. Dig out your telescopes or visit your local astronomy club, and you may be lucky enough to spot our sixth planet's stunning thic...

News Source: New Scientist on 2024-10-09

Was Bruce Willis right? Could a nuclear blast save us from killer asteroid?...

Scientists simulated a nuclear explosion using x-ray pulses to push an asteroid-like rock away in space-like conditions....

News Source: Al Jazeera English on 2024-10-04

China's answer to SpaceX's Starlink is also threatening astronomy...

The first 18 satellites of a planned Chinese mega constellation are brighter than all but 500 stars in the sky, raising fears of a huge impact on astronomy...

News Source: New Scientist on 2024-10-03