Planets form as the dust grains in a protoplanetary disk grow into pebbles and then finally into planets. Because small dust grains interact with gas (via the drag it imparts), the gas in protoplanetary disks influences the ...
Astronomy
Aug 9, 2021
6
1134
Using data for more than 500 young stars observed with the Atacama Large Millimeter/Submillimeter Array (ALMA), scientists have uncovered a direct link between protoplanetary disk structures—the planet-forming disks that ...
Astronomy
Jun 23, 2021
1
130
A research team led by the University of Arizona has reconstructed in unprecedented detail the history of a dust grain that formed during the birth of the solar system more than 4.5 billion years ago. The findings provide ...
Astronomy
Jun 22, 2021
1
242
A team of scientists using the Atacama Large Millimeter/submillimeter Array (ALMA) to study the young star Elias 2-27 have confirmed that gravitational instabilities play a key role in planet formation, and have for the first ...
Astronomy
Jun 17, 2021
6
282
On their long journey to form planets, dust grains may coalesce with each other much earlier than previously thought, simulations by RIKEN astrophysicists suggest1. This may mean revisiting conventional theories of planet ...
Astronomy
May 7, 2021
0
112
Planetary systems form out of the remnant gas and dust of a primordial star. The material collapses into a protoplanetary disk around the young star, and the clumps that form within the disk eventually become planets, asteroids, ...
Space Exploration
Apr 12, 2021
0
19
We are made of stardust, the saying goes, and a pair of studies including University of Michigan research finds that may be more true than we previously thought.
Earth Sciences
Apr 2, 2021
11
6643
In a recent paper in the Proceedings of the National Academy of Sciences a group of researchers led by Maria Hjorth and Simon Albrecht from the Stellar Astrophysics Centre, Aarhus University, have published the discovery ...
Astronomy
Feb 16, 2021
0
3045
Where did Earth's nitrogen come from? Rice University scientists show one primordial source of the indispensable building block for life was close to home.
Astronomy
Jan 21, 2021
2
243
Planets are formed from the disk of gas and dust around a star, but the mechanisms for doing so are imperfectly understood. Gas is the key driver in the dynamical evolution of planets, for example, because it is the dominant ...
Astronomy
Dec 21, 2020
0
174
