(Phys.org) —A dormant volcano—a supermassive black hole—lies at the heart of our galaxy. Fresh evidence suggests that it last erupted two million years ago.
Astronomy
Sep 23, 2013
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A stunning image captured by researchers at The Australian National University (ANU) and Australia's national science agency, CSIRO, shows one of the Milky Way's closest neighbors in new detail.
Astronomy
Dec 17, 2021
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About 3.5 million years ago, the supermassive black hole at the center of our Milky Way galaxy unleashed an enormous burst of energy. Our primitive ancestors, already afoot on the African plains, likely would have witnessed ...
Astronomy
Jun 2, 2020
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By analyzing deep optical imagery from the IAC Stripe 82 Legacy Project, an international team of astronomers has serendipitously discovered a new almost dark galaxy. The newfound galaxy, dubbed "Nube," has a very low surface ...
(Phys.org)—Researchers studying the cosmos have been stumped by an observation first made by Monique and François Spite of the Paris Observatory some thirty years ago; they noted that in studying the halos of older stars, ...
Since ancient times, human beings have been staring at the night sky and been amazed by the celestial objects looking back at them. Whereas these objects were once thought to be divine in nature, and later mistaken for comets ...
Astronomy
Nov 9, 2016
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Astronomers have used data from NASA's Chandra X-ray Observatory to study the properties of dark matter, the mysterious, invisible substance that makes up a majority of matter in the universe. The study, which involves 13 ...
Astronomy
Apr 28, 2017
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Many stars in the halo that surrounds the Milky Way travel in groups. This is the outcome of a recent analysis of data for millions of stars from the Gaia space mission. Astronomers report their discovery today in the international ...
Astronomy
Jan 31, 2017
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Nestled within this field of bright foreground stars lies ESO 495-21, a tiny galaxy with a big heart. ESO 495-21 may be just 3000 light-years across, but that is not stopping the galaxy from furiously forming huge numbers ...
Astronomy
Jun 13, 2019
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A team of astronomers from the University of Cambridge have identified nine new dwarf satellites orbiting the Milky Way, the largest number ever discovered at once. The findings, from newly-released imaging data taken from ...
Astronomy
Mar 10, 2015
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