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We summarize the week's scientific breakthroughs every Thursday.
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		CosmologyCelebrating a new way to listen to the universe
Editor in Chief Eva Emerson reflects on the detection of gravitational waves as a historic moment for physics.
By Eva Emerson - 			
			
		ChemistryAfter 75 years, plutonium is still NASA’s fuel of choice
On the 75th anniversary of the discovery of plutonium, the radioactive element is still not a major source of fuel for nuclear power plants in the United States.
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		AstronomyBlack hole heavyweights triggered gravity wave event
Those gravity waves came from two black holes more massive than any known outside a galactic core and formed in an environment different than the Milky Way.
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		Planetary Science120 seconds in Pluto’s shadow
A 747 outfitted with a telescope worked with New Horizons to reveal details about Pluto’s atmosphere.
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		AstronomyPlanets may emerge from stellar duo gathering icy dust
Gas freezing onto dust grains around a binary star could be setting up a site where comets or even planets might someday form.
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		Physics‘Gravity waves’ is an OK way to refer to gravitational radiation
There’s not lexicographical basis for complaints that ‘gravity wave’ is incorrect usage for gravitational waves.
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		PhysicsThe long road to detecting gravity waves
Thanks to two colliding black holes, Einstein's historic prediction of gravitational waves disturbing the fabric of spacetime has finally been realized.
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		PhysicsGravitational waves explained
Colliding black holes send ripples through spacetime that can be detected here on Earth. What are these gravitational waves, and how did Advanced LIGO detect them?
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		PhysicsGravity waves from black holes verify Einstein’s prediction
Gravitational waves, tremors in the cosmic fabric of space and time predicted by Einstein a century ago, have finally been detected, opening a new avenue for exploring the universe.
By Andrew Grant - 			
			
		AstronomyReaders tussle over top science stories of 2015
Readers tussle over the top spot in our top 25, questions about engineered vocal cords, and more in the February 20 Feedback.
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		AstronomyIn all sorts of circumstances, life finds a way
Editor in Chief discusses the new marine habitats formed by human pollution and the alarming rise of the Zika virus.
By Eva Emerson - 			
			
		Planetary ScienceSupport grows for a return to ice giants Uranus and Neptune
Thirty years ago, Voyager 2 cruised past Uranus and then on to Neptune. Now planetary scientists think it’s time to go back.