This tiny, sizzling exoplanet could be made of molten iron

A newly discovered exoplanet is really making astronomers prove their mettle. Planet GJ 367b is smaller than Earth, denser than iron and hot enough to melt, researchers report in the…

Astronomers have found the Milky Way’s first known ‘feather’

The Milky Way has a “feather” in its cap. A long, thin filament of cold, dense gas extends jauntily from the galactic center, connecting two of the galaxy’s spiral arms,…