Nature’s fireworks on display

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In two new videos from NASA's Deep Impact spacecraft, bright flashes of light known as sun glints act as beacons signaling large bodies of water on Earth.

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A timely Q&A; with physicist Sean Carroll about how our one-way trip from past to future is entangled with entropy and the origin of the universe

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"As we looked at smaller objects - individual galaxies and satellite galaxies, the normal matter content gets steadily less..."

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Here are stars packed like golden sand, gas combed in delicate blue threads, piled into burgundy thunderheads and carved into sinuous rilles and ribbons, and galaxies clotted with star clusters dancing like spiders on the ceiling. More Articles

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NASA's new planet-hunting telescope has found two mystery objects that are too hot to be planets and too small to be stars. More Articles

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Russia's top space researchers will hold a closed-door meeting to plan a mission to deflect 99942 Apophis, an asteroid that will fly close to Earth two decades from now, said Anatoly N.

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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... More Articles

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Astronomers said Wednesday that they had discovered a planet composed mostly of water. More Articles

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Push on the electromagnetic fields in the quantum vacuum and you should get an equal and opposite force. More Articles

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Astronomers want you… to help them match pictures of cosmic collisions, which are known as "galactic mergers." Studying these mergers could explain why the universe has the mix of galaxy types – from those with wound-up spiral arms to compact balls of stars – that it do …

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The reason physicists are so excited about the LHC, though, is that the kind of supersymmetry that best solves the problem with the Higgs will become visible at the higher energies the LHC will explore.

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Welcome to the home of Carl Sagan Day. This November 7, 2009, we will celebrate the life and contributions of the great astronomer, author, and philosopher, Carl Sagan, on the 75th anniversary of his birth.

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While religion and science usually strive to answer different questions, the battles over issues such as evolution and the study of consciousness show that they also sometimes tread on each other's turf.

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Scientists have finally identified the mysterious source of X-ray emissions at the center of our galaxy's youngest supernova: Inside the remains of Cassiopeia A sits a baby neutron star surrounded by a thin layer of carbon dioxide.

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Nearly lost amidst the breathless anticipation of all things wireless...is the potential impact these gadgets may have on scientific instruments that likewise need access to the electromagnetic spectrum.

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...the troubled collider is being sabotaged by its own future.

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The discovery of life elsewhere in the Solar System would 'profoundly change our understanding of where we came from and our place in the cosmos', astrobiologist Lewis Dartnell told Sam Wong ahead of his public lecture on the subject this week

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The world seems to be putting itself together piece by piece on this damp gray morning along the coast of Maine.

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Can the asymmetric distribution of craters on the Moon be explained by the known distribution of near Earth asteroids that are thought to have caused them? Their answer is a cautious "no". More Articles

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Today the Australian magazine Cosmos, along with a vast number of other blogs and publications, reprinted an article by Simon Singh, in slightly tweaked form, in an act of solidarity.

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While the effort to detect gravitational waves is ongoing, the researchers have now used the LIGO apparatus to observe the oscillations of a 2.7 kg pendulum mode at a level close to its quantum ground state.

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Each emitter works a bit like an tiny particle accelerator: The anode of the emitter charges the nanoparticles, which are then accelerated and then shot out a tube by a strong magnetic field generated by a stack of microchip-like components.

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Long before Venus became a hot, dry and barren planet with a choking mass of carbon dioxide for an atmosphere, it might have once been home to shifting continents and an ocean of water, according to the latest data from a European space probe. More Articles

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Sixty Symbols, a series of short video primers on all those symbols that comprise the formulae that even the most seasoned researchers forget. More Articles

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Hypercompact stellar systems result when a supermassive black hole is violently ejected from a galaxy, following a merger with another supermassive black hole. The evicted black hole rips stars from the galaxy as it is thrown out.

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