Some 10 billion years ago, the Milky Way merged with a large galaxy. The stars from this partner, named Gaia-Enceladus, make up most of the Milky Way's halo and also shaped its thick disk, giving it its inflated form. A description ...
Astronomy
Oct 31, 2018
3
1189
Astronomers are borrowing principles applied in biology and archaeology to build a family tree of the stars in the galaxy. By studying chemical signatures found in the stars, they are piecing together these evolutionary trees ...
Astronomy
Feb 20, 2017
7
2031
It had been thought that all ants, wasps and other eusocial insects used a common class of chemical compounds to distinguish queens from workers and other members of their colonies or hives. But new research finds that there ...
Plants & Animals
Feb 3, 2016
0
460
In its early life, Earth suffered a meteorite pummelling that lasted 100 million years and may have changed its chemical makeup forever, researchers said Wednesday.
Earth Sciences
Sep 23, 2015
2
81
Salmon carry a strontium chemical signature in their "ear bones" that lets scientists identify specific streams where the fish hatched and lived before they were caught at sea. The new tool may help pinpoint critical habitats ...
Ecology
May 15, 2015
0
90
A team of Galactic archaeologists has uncovered new insights into the formation of the earliest stars and galaxies by observing the chemical signatures of ancient 'fossil' stars present in the outer and inner halos encircling ...
Astronomy
May 5, 2014
0
0
Floods of molten lava may sound like the stuff of apocalyptic theorists, but history is littered with evidence of such past events where vast lava outpourings originating deep in the Earth accompany the breakup of continents.
Earth Sciences
Apr 23, 2014
2
0
A spacecraft that looks like a giant sunflower might one day be used to acquire images of Earth-like rocky planets around nearby stars. The prototype deployable structure, called a starshade, is being developed by NASA's ...
Astronomy
Mar 21, 2014
3
0
By directing energy beams at tiny crystals found in a Martian meteorite, a Western University-led team of geologists has proved that the most common group of meteorites from Mars is almost 4 billion years younger than many ...
Space Exploration
Jul 24, 2013
0
0
In order to better understand the composition of rocky exoplanets, researchers have proposed a method to identify chemical signatures from surface materials. A better understanding of exoplanet surface compositions will help ...
Astronomy
May 27, 2013
0
0
