Galaxies

Type Ia supernovae, often used to calibrate cosmological measurements, may arise from merging white dwarfs, after all

The rapid formation of stars billions of years ago compared with the present day appears to have resulted from larger gas reservoirs rather than from a more efficient formation process

Making a star is no easy thing

Starlight accounts for anomalous electron signals.

In a study in the journal Nature, researchers show that the relative lack of star density in dwarf galaxies need not conflict with standard cosmological models if you include the blast effects of supernovae. Karen Hopkin reports

NASA hopes that Kepler will eventually turn up habitable, Earth-like worlds

Books and recommendations from Scientific American

NASA's latest space surveyor should be able to peer at distant galaxies and uncover dim objects right in our own celestial backyard

The Hubble Space Telescope has taken advantage of its beefed-up hardware to peer deep into the universe, spotting galaxies that existed just 600 million years or so after the big bang.