Planets can form much faster than thought, new ALMA telescope photos suggest

[Admin]

Clouds of dust and gas not far from our solar system are giving astronomers a rare glimpse into the earliest stages of planet formation.

Planets can form much faster than thought, new ALMA telescope photos suggest : Read more

 

[rod]

"The new images add more evidence to challenge the prevailing wisdom, which holds that planet-forming disks need at least two million years to produce worlds like those in our own solar system. A revamped idea of how quickly planets can form came in August 2022, when astronomers found the youngest exoplanet ever discovered, a gassy world 395 light-years from Earth and merely 1.5 million years old."

Something to chew on here

Encyclopaedia of exoplanetary systems

This encyclopaedia provides latest detections and data announced by professional astronomers about exoplanetary systems. It is about objets lighter than 60 Jupiter masses, which are orbiting stars/brown dwarf or are free floating. It provides also a database about planets in binary systems, and...

exoplanet.eu

At the exoplanet.eu site, there are 2507 showing radii 3 or smaller earth size. 395 fall into the range 0.38 to 1.2 earth radii size. Other exoplanets will be much larger in size compared to what we see from Mercury to Mars here. The timeline for planet formation from tiny dust grains to mature planets, this article and observations challenge long timelines it seems. Quick planet formations now?

 

[George²]

How to calculate the age of a protoplanetary disk, depending on the parameters of the star around which it is located?