The trans-Neptunian object Altjira, 44 times farther from the Sun than Earth is, could be the second known trinary, ...

Why do comets and their meteoroid streams weave in and out of Earth's orbit and their orbits disperse over time? In a paper ...

A solar jet captured by the Solar Orbiter unleashed a mind-blowing 200,000-fold increase in a rare helium isotope, 3He – far ...

The constellation of four satellites can take both narrow- and wide-field images of the Sun to study its corona and solar ...

The sun just released a burst of a rare form of helium known as helium-3 ( 3 He). What's peculiar is this lightweight, ...

Researchers have developed a new coronagraph — an optical device that blocks out light from a bright source — that could make ...

A new AI model from the University of Bern predicts planetary systems likely to host Earth-like planets. It could boost the ...

A distant planet's atmosphere shows signs of molecules that on Earth are associated only with biological activity, a possible signal of life on what is suspected to be a watery world, according to a ...

El Niño, a climate troublemaker, has long been one of the largest drivers of variability in the global climate. Every few ...