We're not that special, says new research led by the Centre for Star and Planet Formation at the Natural History Museum of Denmark, University of Copenhagen.
About 4.567 billion years ago, our solar system's planets spawned from an expansive disc of gas and dust rotating around the sun. While similar processes are witnessed in younger solar systems throughout the Milky Way, the formative stages of our own solar system were believed to have taken twice as long to occur. It turns out that is not the case, according to a new paper.
Using improved methods of analysis of uranium and lead isotopes, their study of primitive meteorites led them to date the formation of two very different types of materials, calcium-aluminum-rich inclusions (CAI's) and chondrules, found within the same meteorite. By doing so, the chronology and overall understanding of our solar system's development has been altered, they conclude in their Science article.
They took a closer look at the first three million years of the solar system's development by analyzing primitive meteorites composed of a blend of our solar system's very oldest materials. In part, the study confirmed previous analyses demonstrating that CAI's were formed during a very short period of time. The new discovery is that the chondrules were formed during the first three million years of the solar system's development as well. This stands in contrast with assumptions that chondrules only started forming roughly two million years after CAIs.
"By using this process to date the formation of these two very different types of materials found in the same meteorite, we are not only able to alter the chronology of our solar system's historical development, we are able to paint a new picture of our solar system's development, which is very much like the picture that other researchers have observed in other planetary systems," James Connelly of the Centre for Star and Planet Formation said in a statement.
Showing that chondrules are as old as CAIs addresses a long-standing question of why chondrule formation should be delayed by up to 2 million years after CAIs. The answer – it is not.
"In general, we have shown that we are not quite as unique as we once thought. Our solar system closely resembles other observable planetary systems within our galaxy. In this way, our results serve to corroborate other research results which indicate that earth-like planets are more widespread in the universe than previously believed," says Professor Martin Bizzarro, head of the Centre for Star and Planet Formation.
- PHYSICAL SCIENCES
- EARTH SCIENCES
- LIFE SCIENCES
- SOCIAL SCIENCES
Subscribe to the newsletter
Stay in touch with the scientific world!
Know Science And Want To Write?
- Phase-Change Materials Set New Speed Limit For Silicon
- M60-UCD1: Tiny Galaxy, Supermassive Black Hole
- More Children Making Music, But Are Lessons Too Conventional?
- Life After The 125 GeV Higgs: What Is Left Of Two-Higgs Doublet Models
- Watching Neurons Learn: Learning New Ideas Is More Difficult
- 'Cli-Fi': Literary Genre Rises To Prominence In The Shadow Of Climate Change
- Witness The Singularity AI Nanotech Co-Evolutionary Merger
- "I only have one problem with this article, and it is your implication that atheism is the lack..."
- "Sorry, I do not quite get your point. What do you object to ? The fact that the SM lagrangian remains..."
- "Recently someone requested my opinion on a book to read authored by a woman who runs a health spa..."
- "Bad idea. A person may be having those feelings for any number of reasons. A man may be angry because..."
- " Quantum Mechanics (intellectual dishonesty) at its finest, a never ending logical fallacy of moving..."
- Gibbon genome sequence deepens understanding of primates rapid chromosomal rearrangements
- Combining antibodies, iron nanoparticles and magnets steers stem cells to injured organs
- Messier 54 lithium: This star cluster is not what it seems
- Sharks more abundant on healthy coral reefs
- Using plants to produce enzyme may provide treatment for high blood pressure in lungs
Books By Writers Here