Time may be running out for the Great Red Spot.
Space-time ripples show how quickly our Universe expanded.
High-energy emissions at a dead star’s core show how it exploded.
Amid cloudy skies, a nearby stellar explosion is spotted.
Exoplanet details are finally coming to light.
Telescope observations reveal atmospheric water on exoplanets.
The United Nations calls for an asteroid defense plan.
Constant vigilance rewards hobbyist astronomers.
A pulsing star at our galaxy’s heart shares a black hole’s secrets.
Observations of a star’s magnetic field reveal unusual behavior.