Chemical traces from star formation cast light on cosmic history
Fresh insight into how stars are formed is challenging scientists' understanding of the Universe.
Fresh insight into how stars are formed is challenging scientists' understanding of the Universe.
Astronomy
Jun 4, 2018
0
154
The epoch when the very first stars appeared is a key period of cosmic history. These stars began the manufacture of the chemical elements (those heavier than hydrogen and helium) and their light began the reionization of ...
Astronomy
Oct 10, 2016
5
40
ESA's Planck satellite has revealed that the first stars in the Universe started forming later than previous observations of the Cosmic Microwave Background indicated. This new analysis also shows that these stars were the ...
Astronomy
Aug 31, 2016
35
1468
An international team of astronomers today (29 June) released a gazetteer of the hidden universe, which reveals the unseen sources of energy found over the last 12 billion years of cosmic history. Professor Haley Gomez of ...
Astronomy
Jun 29, 2016
18
1083
This is a final act of celestial beauty before the long fade into cosmic history. Invisibly buried in the centre of this colourful swirl of gas is a dying star, roughly the same mass as the sun.
Astronomy
Mar 8, 2016
0
151
How did the universe begin? And what came before the Big Bang? Cosmologists have asked these questions ever since discovering that our universe is expanding. The answers aren't easy to determine. The beginning of the cosmos ...
Astronomy
Jan 25, 2016
74
3590
Scientists have developed a technique to use quasars – powerful sources driven by supermassive black holes at the centre of galaxies – to study the universe's history and composition. To demonstrate the new method, based ...
Astronomy
Dec 4, 2015
1
1713
(Phys.org) —Cosmologists have made the most sensitive and precise measurements yet of the polarization of the cosmic microwave background.
Astronomy
Oct 21, 2014
24
0
(Phys.org) —Most of the universe's heavy elements, including the iron central to life itself, formed early in cosmic history and spread throughout the universe, according to a new study of the Perseus Galaxy Cluster using ...
Astronomy
Oct 31, 2013
1
0
The race is on to solve the mystery of dark energy, the unknown force that is causing the universe to expand faster and faster. It's one of the biggest open questions in cosmology, but now a handful of high-profile projects ...
Astronomy
Aug 16, 2013
4
0