Tag: gravitational waves
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Listening to the sounds of the cosmos
[ This blog is dedicated to tracking my most recent publications. Subscribe to the feed to keep up with all the science stories I write! ] Last year, I went to a conference in Florida to hear — and in some cases meet — some of the leading thinkers in the study of gravitational waves.…
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If we could only build one huge observatory….
[ This blog is dedicated to tracking my most recent publications. Subscribe to the feed to keep up with all the science stories I write! ] Q: Suppose we can only build one big telescope. Should we look for life among the stars or the origins of the universe? I participated in an experts’ roundtable…
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New data offer a peek into the Universe’s first instants
Today was an exciting and stimulating day: the BICEP2 collaboration announced the first measurement of the cosmic microwave background that might tell us whether or not inflation happened. Inflation is the hypothetical rapid expansion of the Universe during its first instants, which explains a lot about why the cosmos appears the way it does. However,…
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How did the biggest black holes form?
The most massive known object in the cosmos is the black hole at the center of M87, a huge galaxy in the Virgo Cluster. While most large galaxies (including the Milky Way) harbor supermassive black holes, the very largest are interesting. That’s because galaxies and their black holes seem to share a history, based on…
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The week in review (October 13 – 19)
I’m at GeekGirlCon this weekend, so I’m busy with non-writing activities as part of the DIY Science Zone. Thanks to our Fearless Leader Dr. “Nick Fury” Rubidium for putting our part of the event together! Where Nature Hides the Darkest Mystery of All (Nautilus): Even though there’s no solid barrier, the event horizon of a…
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General relativity holds up under extreme gravity test
The general theory of relativity is the reigning champion of gravitational theories: it’s withstood tests in the Solar System, near black holes, and in binary systems. Most recently, astronomers performed detailed observations of a pulsar-white dwarf binary system, which provided an exquisite example of general relativity in action. Pulsars and white dwarfs are both the…
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Gravitational waves: the froth of spacetime
My second piece for BBC Future is up! I ask—and partly answer—the question, “Will we ever detect gravitational waves directly?” (And don’t worry if you don’t know what a gravitational wave is: I answer that one too!) A major part of the problem is that gravity is weak: even the strongest gravitational wave will only…
Bowler Hat Science 