Astronomers have discovered a vast collection of young galaxies in the early universe.
A galaxy in the midst of a merger isn’t forming stars, even though it could. Astronomers think the galaxy’s central black hole might be the reason why.
A high-resolution ALMA image of HR 8799’s planetary disk suggests an undiscovered planet.
A Kuiper Belt object discovered nearly a decade ago turns out to be much darker – and thus larger – than thought.
Watch the Saturn-Mars-Antares triangle change shape as the planets shift in the sky. With the last-quarter Moon rising late on Sunday, the skies are perfect for some deep-sky hunting.
The orbiting science laboratory begins a series of marathon passes this week that favor the northern hemisphere.
Antares and Betelgeuse may be colossal stars, but we take it to the next level of stellar monstrosity with a visit to UY Scuti, a star that makes our Sun seem no bigger than a pinpoint.