Articles Tagged “Stars”
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New clues on the nature of the first stellar generations in our Universe
From the analysis of the chemical composition of some of the oldest stars in our Galaxy, an international team of astronomers led by Cristina Chiappini from the Leibniz-Institut für Astrophysik Potsdam (AIP) and the Instituto…
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Asymmetric Supernovae: Not All Stellar Explosions Expand Spherically
Stars are balls of glowing gas, with a nearly spherical shape. Accordingly, one would expect that when some stars explode as supernovae at the end of their lives, the resulting colossal fireballs should share this…
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Black Holes in Star Clusters Stir Up Time and Space
Within a decade scientists could be able to detect the merger of tens of pairs of black holes every year, according to a team of astronomers at the University of Bonn’s Argelander-Institut fuer Astronomie, who…
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First Known Binary Star Is Discovered to Be a Triplet, Quadruplet, Quintuplet, Sextuplet System
In ancient times, people with exceptional vision discovered that one of the brightest stars in the Big Dipper was, in fact, two stars so close together that most people cannot distinguish them. The two stars,…
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Planet-Hunting Method Succeeds: Jupiter-like Planet Found Orbiting One Of Smallest Stars
A long-proposed tool for hunting planets has netted its first catch — a Jupiter-like planet orbiting one of the smallest stars known. The technique, called astrometry, was first attempted 50 years ago to search for…
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Hidden Details of Earth’s Atmosphere Revealed By Orbiting Spacecraft
Watching the stars set from the surface of the Earth may be a romantic pastime but when a spacecraft does it from orbit, it can reveal hidden details about a planet’s atmosphere. The technique is…
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Bonn astronomers simulate life and death in the universe
Stars always evolve in the universe in large groups, known as clusters. Astronomers distinguish these formations by their age and size. The question of how star clusters are created from interstellar gas clouds and why…