The summer solstice: When is it and when does it occur?
Reference The summer solstice marks the start of astronomical summer and the longest day of the year. Here we explore when the summer solstice occurs and why.
Reference The summer solstice marks the start of astronomical summer and the longest day of the year. Here we explore when the summer solstice occurs and why.
Mathematician Per Enflo, who solved a huge chunk of the 'invariant subspaces problem' decades ago, may have just finished his work.
The volcano, which erupted in January 2022, was a type never seen before and produced rippling rings of lightning 150 miles (240 kilometers) across.
Astronomers have discovered a second example of a white dwarf pulsar, a rapidly spinning stellar remnant that could teach scientists more about stellar evolution.
Italy's Campi Flegrei is showing some troubling early warning signs, but scientists caution that its eruption is far from certain.
Reference A supernova is what happens when a star has reached the end of its life and explodes in a brilliant burst of light.
Reference Cosmic rays are atom fragments that rain down on the Earth from outside of the solar system. But what causes them and where do they come from?
We may have already found evidence of an evolving, dynamic kind of dark energy, in the form of the radiation emitted when the first stars appeared in the universe.
Europe's Mercury probe BepiColombo will take a close look at its target planet on Monday (June 19), and we can expect some exciting new images soon after that.
The way humans pump groundwater from the planet's interior has changed Earth's tilt by 31.5 inches (80 centimeters) between 1993 and 2010.
After months of warning, experts have confirmed that the ocean-warming event El Niño is here and will gradually strengthen into the winter, with a potential worldwide climate impact.
NASA's Juno spacecraft snapped a photo of a lightning strike high in the swirling clouds near Jupiter's north pole.
New research suggests our planet was born from a rapid accumulation of tiny pebbles and icy fragments in just a few million years.
A new viral video by a NASA astrobiologist explains the space agency's efforts to find out whether we are alone in the universe.
Physicists at the Large Hadron Collider are closing in on an explanation for why we live in a universe of matter and not antimatter.
Two of six newly discovered runaway stars launched by supernovas have broken the record for the fastest objects of this type ever discovered.
The core of Jupiter's ocean moon Europa might have formed billions of years after the rest of it did, if indeed it has formed at all, a new study finds.