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Pinwheel of Star Birth
Pinwheel of Star Birth (10/19/10)This face-on spiral galaxy, called NGC 3982, is striking for its rich tapestry of star birth, along with its winding arms. The arms are lined with pink star-forming...
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Recent research findings on M87 (NGC 4486)
M87 (Messier 87), also known as NGC 4486, is a giant elliptical galaxy, located about 53.5 million light-years away. It is noteworthy for several reasons, including the presence of an unusually large...
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A Great Ball of Stars
A Great Ball of Stars (10/25/10)The NASA/ESA Hubble Space Telescope has turned its sharp eye towards a tight collection of stars, first seen 174 years ago. The result is a sparkling image of NGC 1806,...
View ArticleCyclotomic fields, part 2
In our previous article on cyclotomic fields we were talking about why the Galois group G of ℚ(μn)/ℚ is isomorphic to (ℤ/nℤ)×, where n∈ℤ and μn is the group of nth roots of unity, the roots of xn-1=0...
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What activates a supermassive black hole?
There's good evidence that massive black holes exist at the centers of most large galaxies having a central bulge, and even within galaxies that lack a central bulge, are small, or have an irregular...
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Testing the Fountain of Youth in the lab
It's been more than 10 years since it was noticed that certain enzymes – the sirtuins – had life-extending properties in organisms like yeast, and later nematodes, fruit flies, and mice. The excitement...
View ArticlePosts about sirtuins
♦ Sirtuin proteins (11/16/07)♦ The discovery of sirtuins, part 1 (11/17/07)♦ The discovery of sirtuins, part 2 (11/20/07)♦ Sirtuin news (1/21/08)♦ SIRT1 and cancer (10/26/08)♦ Testing the Fountain of...
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Supermassive black hole in a dwarf galaxy
Supermassive black hole in a type of galaxy where nobody expected to find one? Henize 2-10 is a small, mostly unremarkable compact dwarf galaxy. Its estimated dynamical mass is about 1010 M⊙, only a...
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Telomerase can reverse the aging process... sort of
Biologists are, at long last, beginning to understand the molecular processes responsible for aging in complex (multicellular) organisms – and to investigate ways to counteract these processes. We...
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Flocculent spiral NGC 2841
Flocculent spiral NGC 2841Star formation is one of the most important processes in shaping the Universe; it plays a pivotal role in the evolution of galaxies and it is also in the earliest stages of...
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A Perfect Spiral with an Explosive Secret
A Perfect Spiral with an Explosive Secret (5/30/11)This spiral galaxy was discovered back in the nineteenth century by French astronomer Édouard Jean-Marie Stephan, but in 2008 it became a prime target...
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Wide Field Imager view of a Milky Way look-alike, NGC 6744
Wide Field Imager view of a Milky Way look-alike, NGC 6744 (6/1/11)This picture of the nearby galaxy NGC 6744 was taken with the Wide Field Imager on the MPG/ESO 2.2-metre telescope at La Silla. The...
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"Rose" of Galaxies
"Rose" of Galaxies (4/20/11)The newly released Hubble image shows a large spiral galaxy, known as UGC 1810, with a disk that is distorted into a rose-like shape by the gravitational tidal pull of the...
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A Twisted Dust Web in the Galaxy IC 342
A Twisted Dust Web in the Galaxy IC 342 (7/20/11)Looking like a spiders web swirled into a spiral, the galaxy IC 342 presents its delicate pattern of dust in this image from NASAs Spitzer Space...
View ArticleTriple active galactic nucleus
Black hole threesome revealed(Science News) Andy Warhol reportedly said, “One’s company, two’s a crowd and three’s a party.” New data reveal one heck of a black hole party, a U.S. team of researchers...
View ArticleFormation of earliest black holes
Dawn of the black holes(Science News) The seeds of the universe’s first black holes could have formed in gas halos much smaller than previously calculated, Canadian and American astronomers report...
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A Spiral in Leo
A Spiral in Leo (8/10/11) This new picture from ESO’s Very Large Telescope shows NGC 3521, a spiral galaxy located about 35 million light years away in the constellation of Leo (The Lion). Spanning...
View ArticleThe amino acid alphabet
Amino acid alphabet soupVia Astrobiology Magazine, 8/19/11 All living creatures on this planet use the same 20 amino acids, even though there are hundreds available in nature. Scientists therefore have...
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A Galaxy Full of Surprises — NGC 3621 is bulgeless but has three central...
A Galaxy Full of Surprises — NGC 3621 is bulgeless but has three central black holesThis image, from ESO’s Very Large Telescope (VLT), shows a truly remarkable galaxy known as NGC 3621. To begin with,...
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Classic Portrait of a Barred Spiral Galaxy
Classic Portrait of a Barred Spiral Galaxy (2/3/12)The NASA/ESA Hubble Space Telescope has taken a picture of the barred spiral galaxy NGC 1073, which is found in the constellation of Cetus (The Sea...
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