Astronomy
- 			 Astronomy AstronomyGalactic de GustibusAbout 13 billion years after its birth, our galaxy is still packing on the stars. By Ron Cowen
- 			 Astronomy AstronomyMagnetic Thrust: Fields force matter into black holesNew observations confirm that magnetic fields provide matter with the last push to plunge into a black hole. By Eric Jaffe
- 			 Astronomy AstronomyNot a planet?New observations add to the evidence that an image of a planetary-mass object discovered beyond the solar system is not that of a bona fide planet. By Ron Cowen
- 			 Astronomy AstronomySpewing superdustAstronomers have identified a type of supernova as the main source of space dust. By Ron Cowen
- 			 Astronomy AstronomyMini Solar Systems? Astronomers find disks around planet-size objectsDisks with the potential to form planets, or at least moons, have been found orbiting objects outside the solar system that themselves are no heftier than planets. By Ron Cowen
- 			 Astronomy AstronomySafe from a Heavenly Doom: Gamma-ray bursts not a threat to EarthGamma-ray bursts are likely to occur in the Milky Way. By Ron Cowen
- 			 Astronomy AstronomyCrust on a starBy analyzing X rays generated by the rumblings of a neutron star 40,000 light-years from Earth, astronomers have estimated the thickness of the dense star's crust. By Ron Cowen
- 			 Astronomy AstronomyBig Breakup: That’s the way the comet crumblesScores of telescopes are watching the continuing breakup of a comet as it nears the sun. By Ron Cowen
- 			 Astronomy AstronomyEnergy-Saving Space Engines: Black holes can be greenSome seemingly quiet black holes are actually efficient engines that emit jets of high-energy particles. 
- 			 Astronomy AstronomyCrash: Ripples of space-time debut in black hole simulationsTwo teams have for the first time successfully simulated the merger of two black holes and the event's production of gravitational waves. By Ron Cowen
- 			 Astronomy AstronomyRing around the Pulsar: Planets may form in a harsh environmentAstronomers have found a disk that has the potential to make planets in the harsh environment surrounding the ultradense remains of an exploded star. By Ron Cowen
- 			 Astronomy AstronomyTwin historyThe Milky Way and its nearest large galactic neighbor, Andromeda, are more alike than earlier evidence had indicated. By Ron Cowen