Using a telescope that can see cold grains of cosmic dust, astronomers have photographed the freezing factories of the Milky Way galaxy's biggest stars.
A new model for generating a global magnetic field in the ancient moon could help solve a 40-year-old mystery. The Earth has a magnetic field because it has a spinning solid core surrounded by hot metallic liquid, which churns around lava-lamp style and generates magnetism. But the moon is too small and cool to possess such a molten interior...
A radio telescope array being built in the highest, driest desert in the world has photographed two colliding galaxies for its first public-test shots. The new images reveal a flurry of star formation within thick clouds of gas and dust at the Antennae Galaxies' impact zone, 45 million light-years away.
NASA wants you and your smartphone to help it address global problems. On Sept. 20, the agency announced the International Space Apps Competition asking scientists, engineers, and ordinary citizens to develop apps that use publicly released scientific data to study things like weather-related hazards and other pressing issues.