Rethinking planetary climate controls
Yale researchers have provided a new explanation for why Earth's early climate was more stable and warmer than it is today.
Earth Sciences
Aug 9, 2018
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77
News tagged with chemical evolution
Chemistry can change the ingredients in planet formation
Planet and star formation starts with a lot of material collapsing, falling down onto itself because of gravity. In the middle of this, a protostar is being formed. This star will then start to get warm and eventually glow. ...
Astronomy
Mar 1, 2018
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19
The chemical evolution of DNA and RNA on early Earth
RNA was probably the first informational molecule. Now, chemists from Ludwig-Maximilians-Universitaet (LMU) in Munich have demonstrated that alternation of wet and dry conditions could have sufficed to drive the prebiotic ...
Biochemistry
Jan 18, 2018
0
43
Astronomers perform largest-ever survey of high-mass binary star systems
In addition to solo stars like the sun, the universe contains binary systems comprising two massive stars that interact with each other. In many binaries, the two stars are close enough to exchange matter and may even merge, ...
Astronomy
Apr 20, 2017
0
3
The origins of abiotic species
How can life originate from a lifeless chemical soup? This question has puzzled scientists since Darwin's 'Origin of species'. University of Groningen chemistry professor Sijbren Otto studies 'chemical evolution' to see if ...
Biochemistry
Jan 4, 2016
26
833
We are all stardust—carbon star LX Cygni provides insights on the chemical evolution of the universe
(Phys.org)—A carbon star is a giant red star nearing the end of its life, with an atmosphere containing more carbon than oxygen. LX Cygni could be an interesting example of an object that is currently in the process of ...
Bricks to build an Earth found in every planetary system
Earth-like planets orbiting other stars in the Milky Way are three times more likely to have the same type of minerals as Earth than astronomers had previously thought. In fact, conditions for making the building blocks of ...
Astronomy
Jul 9, 2015
1
100
Stars with the chemical clock on hold
An international team of astrophysicists, led by Cristina Chiappini from the Leibniz Institute for Astrophysics Potsdam, has discovered a group of red giant stars for which the 'chemical clock' does not work: according to ...
Astronomy
Apr 10, 2015
1
1989
Classical nova explosions are major lithium factories in the universe
A team of astronomers from National Astronomical Observatory of Japan (NAOJ), Osaka Kyoiku University, Nagoya University, and Kyoto Sangyo University observed Nova Delphini 2013 (Figure 1, 3) which occurred on August 14, ...
Astronomy
Feb 18, 2015
2
75
Chemists create 'artificial chemical evolution' for the first time
Scientists have taken an important step towards the possibility of creating synthetic life with the development of a form of artificial evolution in a simple chemistry set without DNA.
Biochemistry
Dec 9, 2014
0
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